{"title":"利用钻井参数计算机械比能估算碳酸盐岩地层孔隙度","authors":"P. Kirkham","doi":"10.2118/209811-pa","DOIUrl":null,"url":null,"abstract":"\n A novel technique to predict porosity from mechanical specific energy (MSE), as measured using a downhole drilling dynamics tool, is proposed. The method is based on the fundamental conservation of energy principle and uses rock physics to establish a relationship between the drillability of a rock, its lithological properties, and its porosity. This new technique is particularly useful for formation evaluation of carbonate reef reservoirs drilled using the pressurized mud cap drilling (PMCD) technique. Under these conditions, the near-wellbore formation is often deeply invaded by drilling fluids and cuttings, which make interpretation of conventional logs unreliable and difficult. Since drilling measurements are relatively unaffected by this invasion, porosity determinations from MSE can provide a valuable supplement to conventional logging suites.","PeriodicalId":22066,"journal":{"name":"SPE Reservoir Evaluation & Engineering","volume":null,"pages":null},"PeriodicalIF":2.1000,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Estimation of Formation Porosity in Carbonates Using Mechanical Specific Energy Calculated from Drilling Parameters\",\"authors\":\"P. Kirkham\",\"doi\":\"10.2118/209811-pa\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n A novel technique to predict porosity from mechanical specific energy (MSE), as measured using a downhole drilling dynamics tool, is proposed. The method is based on the fundamental conservation of energy principle and uses rock physics to establish a relationship between the drillability of a rock, its lithological properties, and its porosity. This new technique is particularly useful for formation evaluation of carbonate reef reservoirs drilled using the pressurized mud cap drilling (PMCD) technique. Under these conditions, the near-wellbore formation is often deeply invaded by drilling fluids and cuttings, which make interpretation of conventional logs unreliable and difficult. Since drilling measurements are relatively unaffected by this invasion, porosity determinations from MSE can provide a valuable supplement to conventional logging suites.\",\"PeriodicalId\":22066,\"journal\":{\"name\":\"SPE Reservoir Evaluation & Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2022-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"SPE Reservoir Evaluation & Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.2118/209811-pa\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"SPE Reservoir Evaluation & Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.2118/209811-pa","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Estimation of Formation Porosity in Carbonates Using Mechanical Specific Energy Calculated from Drilling Parameters
A novel technique to predict porosity from mechanical specific energy (MSE), as measured using a downhole drilling dynamics tool, is proposed. The method is based on the fundamental conservation of energy principle and uses rock physics to establish a relationship between the drillability of a rock, its lithological properties, and its porosity. This new technique is particularly useful for formation evaluation of carbonate reef reservoirs drilled using the pressurized mud cap drilling (PMCD) technique. Under these conditions, the near-wellbore formation is often deeply invaded by drilling fluids and cuttings, which make interpretation of conventional logs unreliable and difficult. Since drilling measurements are relatively unaffected by this invasion, porosity determinations from MSE can provide a valuable supplement to conventional logging suites.
期刊介绍:
Covers the application of a wide range of topics, including reservoir characterization, geology and geophysics, core analysis, well logging, well testing, reservoir management, enhanced oil recovery, fluid mechanics, performance prediction, reservoir simulation, digital energy, uncertainty/risk assessment, information management, resource and reserve evaluation, portfolio/asset management, project valuation, and petroleum economics.