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Reservoir Fluid Geodynamics in Brazilian Presalt Carbonate Field 巴西盐下碳酸盐岩油藏流体地球动力学研究
Pub Date : 2019-03-15 DOI: 10.2118/194841-MS
A. Bertolini, J. Monteiro, Jesus A. Cañas, S. Betancourt, O. Mullins, S. Colacelli, R. Polinski
The objective of this study is to characterize fluid distributions in a presalt field by using well data including downhole fluid analysis (DFA) from wireline formation testers (WFT), openhole logs, and a simplified structural/geological model of the field. From an understanding of the petroleum system context of the field, reservoir fluid geodynamics (RFG) scenarios are developed to link the observations in the existing datasets and suggest opportunities to optimize the field development plan (FDP). DFA measurements of optical density (OD), fluorescence, inferred quantities of CO2 content, hydrocarbon composition, and gas/oil ratio of fluids sampled at discrete depth in six presalt wells are the basis of this study. DFA data at various depths captures fluid gradients for thermodynamic analysis of the reservoir fluids. OD linearly correlates with reservoir fluid asphaltene content. Gas-liquid equilibria are modeled with the Peng-Robinson equation of state (EOS) and solution-asphaltene equilibria with the Flory-Huggins-Zuo EOS based on the Yen-Mullins asphaltenes model. OD and other DFA measurements link the distribution of the gas, liquid, and solid fractions of hydrocarbon in the reservoir with reservoir architecture, hydrocarbon charging history, and postcharge RFG processes. Asphaltene gradient modeling with DFA reduces uncertainty in reservoir connectivity. The CO2 content in some sections of the field fluids limits the solubility of asphaltene in the oil, and the small asphaltene fraction exists in a molecular dispersion state according to the Yen-Mullins model. Low values of OD and small asphaltene gradients seen in most of the upper zones reflect the small asphaltenes concentration in the crude oil. The CO2 concentration was modeled with the modified Peng-Robinson EOS in good agreement with measurements in upper reservoir zones. Matching pressure regimes and asphaltene gradients in Wells B and C indicate lateral connectivity. The hydrocarbon column in this part of the reservoir is in thermodynamic equilibrium. In Wells A, C, D, E, and F the OD of the oil indicates an asphaltene content increase by a factor of four at the base of the reservoir as compared with the crest of the reservoir. This tripled the viscosity in Wells C and D, as indicated by in-situ viscosity measurements. The accumulation of asphaltenes at the bottom of the reservoir is most likely driven by a change in solubility resulting from thermogenic CO2 diffusion into the oil column from the top down. The challenge of the limited number of wells in the development phase of a presalt field for obtaining data to evaluate reservoir connectivity before the FDP is ably addressed by deploying the latest WFT technologies, including probes for efficient filtrate cleanup and fluid properties measurement. These measurements and methodology using a dissolved-asphaltene EOS enabled developing insightful RFG scenarios.
本研究的目的是通过使用电缆地层测试器(WFT)的井下流体分析(DFA)、裸眼测井数据和简化的油田结构/地质模型等井数据来表征盐下油田的流体分布。通过对油田油气系统背景的了解,开发了储层流体地球动力学(RFG)情景,将现有数据集中的观测结果联系起来,并提出优化油田开发计划(FDP)的机会。DFA测量的光密度(OD)、荧光、推断的CO2含量、碳氢化合物组成和油气比是本研究的基础,这些数据来自6口盐下井的离散深度取样。不同深度的DFA数据捕获流体梯度,用于储层流体的热力学分析。外径与储层流体沥青质含量呈线性相关。气液平衡用Peng-Robinson状态方程(EOS)建模,溶液-沥青质平衡用基于Yen-Mullins沥青质模型的Flory-Huggins-Zuo状态方程建模。OD和其他DFA测量将储层中油气的气态、液态和固态组分的分布与储层结构、油气充注历史和充注后的RFG过程联系起来。使用DFA进行沥青质梯度建模减少了储层连通性的不确定性。根据Yen-Mullins模型,油田流体中某些部分的CO2含量限制了沥青质在石油中的溶解度,并且小沥青质馏分以分子分散状态存在。大部分上带的OD值较低,沥青质的梯度较小,反映了原油中沥青质的浓度较小。采用改进的Peng-Robinson EOS模型对CO2浓度进行模拟,与上储层实测结果吻合较好。B井和C井的压力分布和沥青质梯度相匹配,表明其横向连通性。这部分储层的烃柱处于热力学平衡状态。在A、C、D、E和F井中,原油的OD值表明,油藏底部的沥青质含量比油藏顶部的沥青质含量增加了4倍。根据现场粘度测量结果,这使得C井和D井的粘度增加了两倍。沥青质在储层底部的聚集很可能是由由上而下的产热CO2向油柱扩散导致的溶解度变化引起的。在盐下油田的开发阶段,由于井数有限,需要在FDP之前获取数据以评估储层连通性,因此需要部署最新的WFT技术,包括用于高效滤液清理和流体性质测量的探针。这些使用溶解沥青质EOS的测量和方法能够开发出具有洞察力的RFG方案。
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引用次数: 3
Succession Planning; A Way Forward in Achieving Organizational Strategies 接班人计划;实现组织战略的前进之路
Pub Date : 2019-03-15 DOI: 10.2118/194773-MS
Eisa Hadi Al-Daihani, A. K. Nandi, Syed Mohammad Raza
The upstream oil and gas industry, facing with an aging workforce, need to implement the right approach to ensure that competent work force available to carry forward the needed tasks in achieving the company's strategic goals. As organization grows, we need to ensure that processes are in place to attract, retain and develop the employee's talent for succession planning and management. The paper present a strategic process that focuses on creating a sustainable value chain of high potential talent who have the requisite knowledge and skills to lead and manage new organizational requirements and address business challenges. As good succession planning is critical for companies facing the "big crew change," a systematic approach to implement fast track processes is proposed. It involves: i) Critical analysis of manpower (ageing/ specialization etc.), ii) Identification of specialized jobs / competencies, iii) Designing training & development roadmap for all jobs/ levels iv) Young Professional's, Mid- Career and Advance Career Competency Development Roadmaps v) Shadowing the personnel according to the jobs with target date and vi) Robust competency assessment process. The significant impact of implementing above process will ensure the changed crew acquire the desired competencies within timeframe and will be able to take over the retired employee's position. Moreover, there will be no substantial setback to the organization in achieving the organizational strategies since technical capabilities is retained through systematic knowledge transfer process. Implementing a proper succession plan process within the company is one of the significant initiatives to support the development of technical capabilities and leadership capacity to address the challenges like growth in production targets and handling maturing and more complex fields. The proper succession planning and management will also overcome the challenges of selecting the top performers and pooling the talent with equipped technologies. The approach adopted will not only solve the problem of emerging big crew change but also help in achieving the company's strategic goals.
上游油气行业面临着劳动力老龄化的问题,需要采取正确的方法来确保有能力的劳动力来完成公司战略目标所需的任务。随着组织的发展,我们需要确保有适当的流程来吸引、留住和发展员工的人才,以便进行继任计划和管理。本文提出了一个战略过程,其重点是创建一个具有领导和管理新的组织需求和应对业务挑战所需的知识和技能的高潜力人才的可持续价值链。由于良好的继任计划对面临“重大人员变动”的公司至关重要,因此提出了一种系统的方法来实施快速通道流程。它包括:i)对人力资源的批判性分析(老龄化/专业化等),ii)确定专业工作/能力,iii)为所有工作/级别设计培训和发展路线图iv)年轻专业人员,职业中期和高级职业能力发展路线图v)根据目标日期的工作对人员进行跟踪,vi)健全的能力评估过程。实施上述流程的重大影响将确保更换后的机组人员在时间框架内获得所需的能力,并能够接替退休员工的职位。此外,由于通过系统的知识转移过程保留了技术能力,因此组织在实现组织战略方面不会遇到实质性挫折。在公司内部实施适当的继任计划流程是支持技术能力和领导能力发展的重要举措之一,以应对生产目标增长和处理成熟和更复杂油田等挑战。适当的继任计划和管理也将克服选择最佳执行者和汇集人才与装备技术的挑战。采用的方法不仅可以解决即将出现的人员大变动问题,还有助于实现公司的战略目标。
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引用次数: 1
Role of Geomechanics and Integrated Reservoir Characterization in Production Enhancement from a Heterogeneous Carbonate Reservoir: A Success Story from Kuwait 地质力学和油藏综合表征在非均质碳酸盐油藏增产中的作用:科威特的成功案例
Pub Date : 2019-03-15 DOI: 10.2118/194920-MS
G. S. Padhy, Tahani Al-Rashidi, T. M. Gezeeri, A. Shinde, S. Perumalla, Chong Zhou
The subject upper Cretaceous carbonate formation has been characterized as a heterogeneous reservoir with varying facies and petrophysical properties. Distribution of facies strongly varied not only with depth, but also laterally across the field. Upper part of the reservoir is dominated by natural fractures whereas lower part is predominantly argillaceous with mud enrichment. In addition, presence of laminations and vugs enhanced the heterogeneity of the reservoir. Very few wells were drilled and some of them were fractured. This paper demonstrates how geomechanical and integrated reservoir characterization has shown value in well placement strategy. Built number of well-based geomechanical models with data from all wells in order to capture reservoir heterogeneity in models. These models quantified the distribution of rock mechanical properties and pore-pressure as well as present day principle stresses. In addition, these models were integrated with geological model as well as seismic data to generate a 3D geomechanical model. After a thorough rock typing and petrophysical classification, some patterns were recognized in terms of presence of natural fractures in certain layers. However, the production contribution of these natural fractures was unclear. Upon combining all available sensitive fracture indicators, a DFN model was built and calibrated. Finally, the 3D geomechanical model combined present day in-situ stress and pore pressure magnitudes, mechanical properties of all rock facies and natural fracture occurrences at field scale. A thorough well production analysis was also performed to validate the role of natural fractures during production. After systematic integration of diverse sub-surface data sets in 3D geomechanical model, some natural fracture subsets were identified that are optimally oriented to become critically stressed at present day stress regime. Upon further analysis, a new parameter "Index of Critically Stressed Fractures (iCSF)" was created that captured the spatial distribution of networked fracture sets in 3D model that are geomechanically favorable for fluid flow. Number of geomechanical sweetspots were identified at field scale and correlated these areas with other data. It was also recommended to stimulate wells with certain practices. Integration of geomechanical models with production analysis and natural fracture indicators delivered value in identifying geomechanical sweetspots that have potential to flow. Distribution of these sweet spots provided a strategy for well placement as well as stimulation. In addition, this paper also exhibits logical integration of findings from geosciences and engineering disciplines to make informed decisions on well planning in order to maximize the production from challenging reservoirs.
该上白垩统碳酸盐岩地层是一个具有不同相和岩石物性的非均质储层。相的分布不仅随深度变化,而且在横向上也有很大的变化。储层上部以天然裂缝为主,下部以泥质为主,富集泥质。此外,层状和溶洞的存在增强了储层的非均质性。钻的井很少,其中一些是压裂的。本文论证了地质力学和综合储层表征如何在井位策略中显示出价值。利用所有井的数据建立了多个基于井的地质力学模型,以捕获模型中的储层非均质性。这些模型量化了岩石力学特性和孔隙压力的分布以及目前的主应力。此外,这些模型与地质模型和地震数据相结合,生成三维地质力学模型。经过彻底的岩石分型和岩石物理分类,可以识别出某些层中存在天然裂缝的模式。然而,这些天然裂缝对产量的贡献尚不清楚。结合所有可用的敏感裂缝指标,建立并校准DFN模型。最后,三维地质力学模型结合了目前的地应力和孔隙压力大小、所有岩石相的力学特性和野外自然裂缝发生情况。为了验证天然裂缝在生产过程中的作用,还进行了全面的生产分析。在三维地质力学模型中对不同的地下数据集进行系统整合后,确定了一些天然裂缝子集,这些裂缝子集在当前应力状态下具有最佳定向,从而成为临界应力。经过进一步分析,创建了一个新的参数“临界应力裂缝指数(iCSF)”,该参数在三维模型中捕获了网状裂缝集的空间分布,这些裂缝集在地质力学上有利于流体流动。在野外尺度上确定了一些地质力学甜点,并将这些区域与其他数据进行了关联。此外,还建议采用一定的增产措施。将地质力学模型与生产分析和天然裂缝指标相结合,为确定具有潜在流动潜力的地质力学甜点提供了价值。这些甜点的分布为井位和增产提供了策略。此外,本文还展示了地球科学和工程学科研究成果的逻辑整合,以做出明智的井规划决策,从而最大限度地提高具有挑战性的油藏的产量。
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引用次数: 0
Unleash Unconventional Resources with the Power of Light-Laser Technology 利用光激光技术的力量释放非常规资源
Pub Date : 2019-03-15 DOI: 10.2118/195094-MS
S. Batarseh, A. Harith, Haitham A. Othman, Hameed Al Badairy
The objective of this work is to establish a communication between the tight hydrocarbon-bearing formation and the wellbore by using high power laser technology. This paper presents different methods of utilizing the energy of the laser to enhance and improve the flow in unconventional reservoirs including tight formation, the successful results are used for field deployment strategy. High power laser is an innovative alternative to several currently used downhole stimulation methods and technologies. The system consists of the laser source which is mounted on the surface on a coiled tubing unit, fiber optics cable to transmit the energy and the downhole tool. The advantages of utilizing high power laser technology for downhole applications are the ability to control and orient the laser energy precisely. Laser energy generates heat when in contact with the rock samples, the heat impacts the rock samples by dehydrating, collapsing and dissociating some minerals near the wellbore, as well as creating micro- and macro fractures in the formation. In addition, heat removes the blockage around the wellbore and the effect extends deeper into the tight formation for production. Continues efforts over the past two decades have been proven that high power lasers provide controllable heat source while penetrating the formation, this mechanism enhances flow properties especially in tight formation. Low permeability in these formations restricts the flow and reduces production. Shale, Sandstones (including tight sandstones) and carbonate rocks have been treated with high power laser. Pre and post-treatment measurements are conducted for comparisons; the results from all rock types show improvement in permeability and flow. The results of advanced core characterizations, imaging and visualization are presented. The success of the lab experiments leads to the development of field deployment strategy to use high power laser for in-situ treatment in unconventional wells. Utilizing state-of-the-art high power lasers technology in downhole provides innovative and safe stimulation methods. Reliability, accuracy, and precision in controlling the power, orientation and the shape of the beam are some of the properties of the technology that made it attractive for downhole applications. Different tools have been developed for different applications that can fit any slim holes.
这项工作的目的是通过使用高功率激光技术在致密含油气地层和井筒之间建立通信。本文介绍了利用激光能量增强和改善包括致密储层在内的非常规储层流动的不同方法,并将成功的结果用于现场部署策略。高功率激光是目前几种井下增产方法和技术的创新替代方案。该系统由安装在连续油管上的激光源、传输能量的光纤电缆和井下工具组成。在井下应用高功率激光技术的优点是能够精确控制和定向激光能量。激光能量与岩石样品接触时产生热量,热量通过使岩石样品在井筒附近脱水、坍塌和解离一些矿物,并在地层中形成微观和宏观裂缝来影响岩石样品。此外,热量可以消除井筒周围的堵塞,并将影响延伸到致密地层深处进行生产。在过去二十年的不断努力中,高功率激光在穿透地层时提供了可控的热源,这种机制提高了流动性能,特别是在致密地层中。这些地层的低渗透率限制了流动,降低了产量。页岩、砂岩(包括致密砂岩)和碳酸盐岩都可以使用高功率激光进行处理。进行处理前和处理后测量以进行比较;所有岩石类型的结果都显示出渗透率和流动性的改善。介绍了先进岩心表征、成像和可视化的结果。实验室试验的成功,促进了使用高功率激光进行非常规井原位处理的现场部署策略的发展。在井下使用最先进的高功率激光技术,提供了创新和安全的增产方法。该技术在控制动力、方向和光束形状方面的可靠性、准确性和精确性是其在井下应用中具有吸引力的一些特性。针对不同的应用开发了不同的工具,可以适应任何小的井眼。
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引用次数: 0
Is Steamflooding a Form of Low Salinity Waterflooding? 蒸汽驱是一种低矿化度水驱吗?
Pub Date : 2019-03-15 DOI: 10.2118/194820-MS
Hasan N. Al-Saedi, W. Al-Bazzaz, R. Flori
Previously, Al-Saedi and Flori et al. 2018d proposed a novel steam-low salinity EOR technique called low salinity-alternating-steam flooding (LSASF) into a reservoir core with a high reservoir temperature. Naturally, if a reservoir's temperature is very low, then oil is heavy. Using thermal EOR techniques in such a low-temperature reservoir resulted in considerable heat loss. In this study, we investigate the steam lifespan from the injector to the producer in order to check if the injected steam is still active throughout the flooding process or if it will condense because of the heat loss. The Bartlesville Sandstone Reservoir, as with other heavy oil reservoirs, is a low temperature (23°C) shallow reservoir containing heavy oil (600 cP). We believe that steam injected into various cores from the Bartlesville Sandstone Reservoir will condense due to the low reservoir temperature. The question is whether or not this condensed steam behave similarly to low salinity (LS) waterflooding. First, the steam was injected into the oil-free core to determice when the steam condensed and what temperature it condensed at by using a multi-port model to check if the injected steam turned into water. Several Bartlesville Sandstone Reservoir cores were initially flooded with formation water (FW), and then were flooded with different scenarios of steam and LS water. The temperatures of the inlet, the core, and the outlet were recorded. The effluent was collected from different ports out of the cores and different producer positions in order to follow up the steam position inside the core. Core contact angle measurements were conducted throughout the flooded cores to determine the wettability alteration between steam and condensed steam (LS water) with the rock. This study shows that when steam turned into LS water, the sandstone core wettability was altered towards being more water-wet. The condensed steam is considered to be hot LS water, which can reduce oil viscosity and alter the wettability at the same time. These results were for short length cores. If these results are upscaled up to the oil reservoir scale, then the steam will still be turned into LS cold water (LSCW) as will be illustrated in the analytical model (We are still working on the analytical model). The LSCW will work as a wettability modifier only without reducing the oil viscosity. LSCW is not favorable for use in heavy oil reservoirs because the sweep efficiency is very low due to density differences unless the LS water chemistry is manipulated; however, contact angle measurements showed that the LSCW altered the sandstone wettability towards the neutral wet condition.
此前,al - saedi和Flori等人(2018d)提出了一种新型的蒸汽-低矿化度EOR技术,称为低矿化度-蒸汽交替驱(LSASF)到具有高储层温度的储层岩心。自然地,如果储层的温度很低,那么油就很重。在如此低温的储层中使用热驱技术会导致相当大的热损失。在这项研究中,我们研究了从注入器到生产者的蒸汽寿命,以检查注入的蒸汽在整个驱油过程中是否仍然有效,或者是否会因为热损失而凝结。与其他稠油油藏一样,Bartlesville砂岩油藏是一个低温(23°C)浅层油藏,含稠油(600 cP)。我们认为,由于储层温度较低,从Bartlesville砂岩储层注入到各种岩心的蒸汽将会凝结。问题是这种冷凝蒸汽的行为是否与低盐度(LS)水驱相似。首先,将蒸汽注入无油岩心,通过多端口模型检查注入的蒸汽是否变成水,确定蒸汽何时凝结以及凝结温度。几个Bartlesville砂岩油藏岩心最初被地层水(FW)淹没,然后被不同情景的蒸汽和LS水淹没。记录了入口、堆芯和出口的温度。为了跟踪堆芯内的蒸汽位置,从堆芯外的不同端口和不同的生产者位置收集了流出物。在整个淹水岩心中进行岩心接触角测量,以确定蒸汽和冷凝蒸汽(LS水)与岩石之间的润湿性变化。研究表明,当水蒸气转化为LS水时,砂岩岩心润湿性向水润湿性转变。冷凝后的蒸汽被认为是热LS水,它可以降低油的粘度,同时改变润湿性。这些结果适用于短长度岩芯。如果这些结果被放大到油藏规模,那么蒸汽仍然会变成LS冷水(LSCW),这将在分析模型中说明(我们仍在研究分析模型)。LSCW只能作为润湿性改进剂,而不能降低油的粘度。LSCW不适用于稠油油藏,因为由于密度差异,扫描效率非常低,除非对LS水的化学成分进行控制;然而,接触角测量表明,LSCW使砂岩的润湿性向中性湿润状态转变。
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引用次数: 1
The Synthesis and Application of a New Plugging Inhibitor PAS-5 in Water-Based Drilling Fluid 新型水基钻井液堵漏抑制剂PAS-5的合成与应用
Pub Date : 2019-03-15 DOI: 10.2118/194785-MS
Liou Zhiyong, L. Qiang, Gang Yang, Zhang Fengyan, T. Ma
Wellbore instability caused by the dispersion of the clay is one of the most important challenges in drilling operation of fractured formations. The synthesis of new plugging inhibitors and the research of drilling fluid systems are key steps to keep the wellbore stabilization. In this paper, the limitations of conventional drilling fluid inhibitors are discussed and a new plugging inhibitor PAS-5 is synthesized by using amine inhibitor, polyethylene glycol and asbestos fiber as the main monomers. The detailed synthesis step of the plugging inhibitor PAS-5 is illustrated and its action mechanism is explained by scanning electron microscopy. In order to express the good effect of the PAS-5, a new evaluation system is used to indicate its plugging performance. At the same time, the plugging inhibitor PAS-5 was used on-site drilling operation in the Ordos Basin. The results of research show that the synthesis process of PAS-5 is simple and the effect of plugging inhibition is obvious. Compared with conventional treatment agents? PAS-5 outperforms sulfonated asphalt FT-1 and emulsified asphalt RHJ-3 in terms of plugging inhibition performance, with a plugging rate of 90.5% and roller recovery rate of 93.7%. It also has better temperature resistance, there is almost no change in viscosity and filtrate loss when the temperature rises from room temperature to 80°C. The field application results indicated that PAS-5 meets the requirements of drilling, that the reaming time of the trips of the wells is shortened considerably, that the ROP is improved, and that the hole enlargement rate is less than 6%. During the drilling process, PAS-5 can inhibit formation hydration and seal small cracks, thus maintaining the stability of the borehole. This study synthesized a novel plugging inhibitor PAS-5 and an evaluation system was adopted to reveal its plugging performance, and achieved good application effect in on-site drilling operations.
粘土分散引起的井筒失稳是裂缝性地层钻井作业中最重要的挑战之一。新型堵漏抑制剂的合成和钻井液体系的研究是保持井筒稳定的关键步骤。本文讨论了常规钻井液抑制剂的局限性,以胺类抑制剂、聚乙二醇和石棉纤维为主要单体合成了一种新型堵漏抑制剂PAS-5。阐述了封堵抑制剂PAS-5的详细合成步骤,并用扫描电镜分析了其作用机理。为了表达PAS-5的良好效果,采用了一种新的评价体系来评价PAS-5的封堵性能。同时,在鄂尔多斯盆地进行了现场钻井作业,使用了堵漏抑制剂PAS-5。研究结果表明,PAS-5的合成工艺简单,阻堵效果明显。与常规治疗剂比较?PAS-5的阻堵性能优于磺化沥青FT-1和乳化沥青RHJ-3,阻堵率为90.5%,压辊回收率为93.7%。具有较好的耐温性,当温度从室温上升到80℃时,粘度和滤液损失几乎没有变化。现场应用结果表明,PAS-5满足钻井要求,井起下钻扩眼时间明显缩短,机械钻速提高,扩眼率小于6%。在钻井过程中,PAS-5可以抑制地层水化,密封小裂缝,从而保持井眼的稳定性。本研究合成了一种新型堵漏抑制剂PAS-5,并建立了封堵性能评价体系,在现场钻井作业中取得了良好的应用效果。
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引用次数: 5
Managing Challenges for Digital Transformation Initiative in a National Drilling Contractor - A Case Study from Algeria 管理国家钻井承包商数字化转型计划的挑战——以阿尔及利亚为例
Pub Date : 2019-03-15 DOI: 10.2118/195060-MS
A. Arnaout, Sara Bakhti, G. Thonhauser
Digital transformation is a process of applying all digital technologies and tools on current workflows to be able to deliver high quality information at the right time. The digital transformation of drilling will provide an unprecedented stream of high-quality information that has never been accomplished in the industry, through the utilization of automated real-time drilling downhole tools, data analytics and predictive analysis. Thus, it creates value, improves efficiency, further reduces costs and boosts performance significantly. Despite the advantages of digital transformation, the oil and gas industry (especially drilling contractors) has been slow to seize the opportunity. There are many challenges that need to be overcome to realize its full potential for the drilling contractors. A coherent road map to build a successful digital transformation strategy will be addressed in this paper. (that is not only focused on assets, but also focused on how to create new revenue streams.) A setup of a real-time digitalization tool based on automated rig activities detection technology is established in a national drilling contractor in Algeria and a measurement and monitoring process was started. Data aggregation is the first step towards implementing a digital transformation process. However, the main task was standardizing and aggregating cross-vendor data streams. Breaking the data silos was required to move data smoothly from rig site to our digital records for a fast setup Another issue is quality of data. Constant quality control checks of the received data ensured that the maximum value can be accomplished, which will consequently support in improving the awareness and decision process for the contractor based on this detailed information and following systematic procedures. Also, company culture is extremely important to fostering the successful execution of a digital strategy. An approach of sharing relevant information between all members of the drilling crews on daily basis and using what is so-called "Hawthorne Effect", defines a continuous improvement process. The digitalisation of drilling process has the ability to sustain a constant flow of information with the potential to transform operations and create additional profits from existing capacity. Clearing the bottlenecks in the data integration and analysis stages was vital for a successful digital transformation process. This process enables real time reporting of drilling performance. This empowers the contractor to track the improvement and efficiency over time and find a performance gap to establish a feedback link to correct the deviations. The second benefit of applying such process is to by doing increase the utilization of the existing equipment and evaluating the best performance that crews can achieve with such equipment. The eventual goal is establishing and improving the global process and workflow of monitoring the operating units for the multi-level operating
数字化转型是将所有数字技术和工具应用于当前工作流程的过程,以便能够在正确的时间提供高质量的信息。通过利用自动化实时钻井井下工具、数据分析和预测分析,钻井的数字化转型将提供前所未有的高质量信息流,这是业内从未实现过的。因此,它创造了价值,提高了效率,进一步降低了成本,并显著提高了性能。尽管数字化转型具有诸多优势,但油气行业(尤其是钻井承包商)在抓住机遇方面行动迟缓。为了充分发挥其潜力,钻井承包商需要克服许多挑战。本文将讨论建立成功的数字化转型战略的连贯路线图。(这不仅关注资产,也关注如何创造新的收入来源。)阿尔及利亚的一家国家钻井承包商建立了一套基于自动钻机活动检测技术的实时数字化工具,并开始了测量和监测过程。数据聚合是实现数字化转型过程的第一步。然而,主要任务是标准化和聚合跨供应商的数据流。为了快速设置,需要打破数据孤岛,将数据顺利地从钻井现场转移到我们的数字记录。对收到的数据进行持续的质量控制检查,确保能够实现最大价值,从而支持承包商根据这些详细信息和遵循系统程序提高认识和决策过程。此外,企业文化对于促进数字化战略的成功实施也极为重要。每天在钻井队的所有成员之间共享相关信息,并利用所谓的“Hawthorne效应”,定义了一个持续改进的过程。钻井过程的数字化能够维持持续的信息流,有可能改变作业方式,并从现有产能中创造额外的利润。清除数据集成和分析阶段的瓶颈对于成功的数字化转型过程至关重要。该过程可以实时报告钻井性能。这使承包商能够跟踪改进和效率,并找到性能差距,建立反馈链接以纠正偏差。应用这种方法的第二个好处是,通过提高现有设备的利用率,并评估机组人员使用这些设备所能达到的最佳性能。最终目标是通过高速、数字数据技术,克服相当缓慢的人为因素,建立和改进多级操作团队结构的操作单元监控的全球流程和工作流程。在本文中,我们将演示用于实现这一目标的所有工具和框架。
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引用次数: 0
Unlocking Tight Carbonate Reservoir Potential: Geological Characterization to Execution 释放致密碳酸盐岩储层潜力:地质特征到执行
Pub Date : 2019-03-15 DOI: 10.2118/194712-MS
A. I. Latief, S. Syofyan, Tengku Mohd Fauzi Tengku Ab Hamid, M. A. A. Amoudi, Tariq Ali Al Shabibi
The reservoir in discussion is a tight carbonate reservoir with low productivity and relatively under-developed albeit the huge in-place volumes. The expectation is that a detail reservoir characterization will provide insight on factors affecting reservoir productivity, spatial distribution of productive portion of the reservoir and offering solution to overcome reservoir tightness. The case study discusses on how a comprehensive multi-discipline review unravels and presents a robust reservoir heterogeneity framework. A geological review that includes both depositional and diagenetic process is performed to understand distinct components/factors responsible for reservoir heterogeneity. Simultaneously, petrophysical assessment was performed to quantitatively define rock grouping based on porosity-permeability, capillary pressure and pore throat distribution in the log and core domain. The multi-discipline observations were then reconciled to establish relationship between the process origin and the resultant product of specific group/range of reservoir petrophysical properties. The multitude of pore throat characters and its petrophysical properties were linked to the underlying geological processes. The established heterogeneity framework provides clarity on spatial distribution of the reservoir sweet-spot, factors controlling low productivity and the required mitigation. The study provides a complete journey of unlocking tight reservoir potential. It illustrates the geological studies influence toward innovative completion technology selection, design, and execution to overcome reservoir challenge. The study is supported by recent drilling and test results, hence offering insight for adoption and lesson learned.
所讨论的储层为致密碳酸盐岩储层,虽然储量巨大,但产能较低,开发程度相对较低。详细的储层表征将有助于了解影响储层产能的因素、储层生产部分的空间分布,并提供克服储层致密性的解决方案。该案例研究讨论了如何通过综合多学科综述来揭示和呈现一个稳健的储层非均质性框架。地质评价包括沉积和成岩过程,以了解导致储层非均质性的不同成分/因素。同时,根据测井域和岩心域的孔隙度-渗透率、毛管压力和孔喉分布进行岩石物理评价,定量定义岩石组。然后,将多学科的观察结果进行协调,以建立过程成因与特定组/范围的储层岩石物性的最终产物之间的关系。多种孔喉特征及其岩石物性与下伏地质作用有关。建立的非均质性框架清晰地揭示了储层甜点的空间分布、控制低产能的因素以及所需的缓解措施。该研究为解锁致密储层潜力提供了一个完整的过程。说明了地质研究对创新完井技术选择、设计和执行的影响,以克服油藏挑战。该研究得到了最近钻井和测试结果的支持,因此为采用和吸取经验教训提供了见解。
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引用次数: 4
Turning an Offshore Analog Field into Digital Using Artificial Intelligence 利用人工智能将海上模拟油田数字化
Pub Date : 2019-03-15 DOI: 10.2118/195027-MS
R. Espinoza, J. Thatcher, M. Eldred
Replacing all analogue sensors in the oil field is very costly and normally only a fraction of them is done. Currently, there is no cost-effective method to efficiently, reliably and accurately capture analogue meter readings in a digital format. Operators are then left with only two options: either replace them with digital (high capex) or continue with manual gathering (high opex). This paper shows how computer vision and artificial intelligence was used for the first time to capture analogue field gauges data with dramatic reduction of cost and increase reliability. This unique solution was implemented in the Cheleken Oil field, Caspian Sea, Turkmenistan. In the offshore platforms, only low-cost cameras were necessary, and gauges were identified using QR codes. During the field trial, operators were only required to take pictures of the gauges at a given interval of time and upload the photos to the application. After an innovative process of calibration, the acquired images were processed using artificial intelligence and deep learning computer vision. Routine manually gathered data was compared with data collected using this solution with the following observations made: Date/time: Operators usually round time. The solution described records time on the captured pictures automatically.Value: Manually gathered data is subject to reading, typing and transcription errors. This solution has no error (provided a good calibration is done).Data Modification: Data gathered automatically with this solution has no human intervention. Therefore, is not subject to alteration, copying or duplication.Data collection with pictures was completed in 1/10th of the time that manual processes take.The business benefits from quicker operator rounds with improved accuracy in meter reading data, and time stamps. The administrative burden for operators of filling in extensive spreadsheets which are prone to error was reduced, this allowed them to collect more meter readings or be reassigned by management to more important scopes of work that bring greater value to the business. Once more it was proved that "a picture is worth a thousand words ". This solution offers an excellent opportunity for digitizing the marginal section of the field and provides a unique way to turn all analogue data into digital with a very low cost of implementation, on an infinitely scalable platform that is vendor agnostic and simple to manage.
更换油田中所有的模拟传感器是非常昂贵的,通常只完成了其中的一小部分。目前,还没有经济有效的方法来高效、可靠和准确地捕获数字格式的模拟仪表读数。然后,运营商只有两种选择:要么用数字化(高资本支出)取代它们,要么继续人工采集(高运营成本)。本文展示了如何首次使用计算机视觉和人工智能来捕获模拟现场仪表数据,从而大大降低了成本并提高了可靠性。这种独特的解决方案在土库曼斯坦里海的Cheleken油田得到了应用。在海上平台,只需要低成本的相机,并且使用QR码识别量具。在现场试验期间,作业人员只需要在给定的时间间隔内拍摄测量仪的照片,并将照片上传到应用程序。经过创新的校准过程后,使用人工智能和深度学习计算机视觉对获取的图像进行处理。将常规人工采集的数据与使用该解决方案收集的数据进行比较,并进行以下观察:日期/时间:操作人员通常在一周内完成作业。该解决方案描述了自动记录捕获图片的时间。数值:手动采集的数据容易出现读取、输入和转录错误。该解决方案没有误差(提供了良好的校准)。数据修改:使用此解决方案自动收集的数据无需人工干预。因此,不得更改、复制或复制。带图片的数据采集完成时间是手工采集的1/10。业务受益于更快的操作员轮询,提高了抄表数据的准确性和时间戳。减少了操作员填写大量容易出错的电子表格的管理负担,这使他们能够收集更多的仪表读数,或者被管理层重新分配到更重要的工作范围,为业务带来更大的价值。再一次证明了“一幅画胜过千言万语”。该解决方案为油田边缘部分的数字化提供了绝佳的机会,并提供了一种独特的方式,以极低的实施成本将所有模拟数据转换为数字数据,该解决方案具有无限可扩展的平台,与供应商无关且易于管理。
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引用次数: 1
Safaniya Lagoon Corporate Stewardship Biodiversity Sanctuary 萨法尼亚泻湖企业管理生物多样性保护区
Pub Date : 2019-03-15 DOI: 10.2118/194806-MS
Moayad Jumaan, Ali Alsinan
Among the many goals of environmental management in Saudi Aramco, protection of special environmental areas is recognized as high priority to both the company and the Kingdom of Saudi Arabia. In line with this objective, Safaniya Onshore Producing Department (SONPD) designated Safaniya area sea water lagoon as Corporate Stewardship Biodiversity Area. The area is estimated to be 6 km2 peninsula, which is located in the north east of the Safaniya Producing Plant, where undisturbed native flora combines with a pristine shallow sea water lagoon, and provide a safe place for land wildlife (foxes, rodents, reptiles), marine wildlife (turtles, shrimps, fish, mollusks) and birds (flamingos, seagulls, etc.). Establishment of the Safaniya Lagoon started with surveying Safaniya and Tanajib Area, in collaboration with Saudi Aramco Environmental Protection Department (EPD) to select the most suitable region for biodiversity development. An establishment procedure was followed to secure the area with fences to limit the accessibility and prevent improper usage. A signboard was installed to identify the area as a sanctuary, forbidding entrance or any type of land use. Site development included mangrove plantation, already existing trash clean-up, and observation any type of waste dumped in the area, to ensure no contamination or danger to the habitat in the lagoon. The department successfully cooperated with Saudi Aramco EPD to plant more than 9,000 mangrove seedlings at the first two years of development. SONPD in collaboration with Society of Advocates and Volunteers for the Environment (S.A.V.E) invited employees with their respected family members to participate in a biodiversity beach clean-up campaign. The campaign helped collect more than 300 kg of waste, consisting of plastic bottles, old ropes, wood, and other waste materials. SONPD, along with its partners and programs, has now established the Safaniya Lagoon ecological and biological diversity sanctuary as a permanent refuge, with in-place protection and future mangrove planting events planned, the area is expected to expand in biodiversity with native flora and fauna, and expand a natural breeding and hatchery. During the winter season, migratory birds — such as flamingos and Amur Falcons, with flyways that pass over Safaniya Lagoon — are seeking warm weather and abundant food supplies. Creation of biodiversity is just the beginning of further area development. The next phase of sanctuary enhancement will be reutilization of tertiary treated wastewater for trees, which will form a wind barrier for mangroves.
在沙特阿美公司环境管理的众多目标中,保护特殊环境区域被认为是公司和沙特阿拉伯王国的重中之重。为了实现这一目标,Safaniya陆上生产部门(SONPD)将Safaniya地区的海水泻湖指定为企业管理生物多样性区。该地区估计为6平方公里的半岛,位于萨法尼亚生产工厂的东北部,未受干扰的本地植物群与原始的浅海泻湖相结合,为陆地野生动物(狐狸,啮齿动物,爬行动物),海洋野生动物(海龟,虾,鱼,软体动物)和鸟类(火烈鸟,海鸥等)提供了一个安全的地方。Safaniya泻湖的建立始于对Safaniya和Tanajib地区的调查,与沙特阿美公司环境保护部门(EPD)合作,选择最适合生物多样性发展的地区。遵循建立程序,用围栏保护该区域,以限制可达性并防止不当使用。安装了一块招牌,以确定该地区是一个避难所,禁止进入或任何类型的土地使用。现场开发包括红树林种植,现有的垃圾清理,并观察倾倒在该地区的任何类型的废物,以确保没有污染或危害泻湖的栖息地。本署成功与沙特阿美环保署合作,在发展的头两年种植了9,000多棵红树幼苗。SONPD与环境倡导者和志愿者协会(S.A.V.E)合作,邀请员工及其尊敬的家人参加生物多样性海滩清理运动。这次活动帮助收集了300多公斤的废物,包括塑料瓶、旧绳子、木头和其他废物。SONPD与其合作伙伴和项目一起,现已建立了萨法尼亚泻湖生态和生物多样性保护区,作为永久避难所,并计划进行就地保护和未来的红树林种植活动,该地区预计将通过本地动植物扩大生物多样性,并扩大自然繁殖和孵化场。在冬季,候鸟——如火烈鸟和阿穆尔猎鹰,它们的飞行路线会经过萨法尼亚泻湖——正在寻找温暖的天气和充足的食物供应。创造生物多样性只是进一步发展的开始。下一阶段的保护区改善工程将会把经三级处理的废水再用于树木,为红树林形成风障。
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Day 2 Tue, March 19, 2019
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