石油钻采工艺
石油鑽採工藝
석유찬채공예
OIL DRILLING & PRODUCTION TECHNOLOGY
2015年
4期
1-4
,共4页
地质导向%界面识别%方位伽马%电磁波电阻率%随钻测量%MRC%测量零长
地質導嚮%界麵識彆%方位伽馬%電磁波電阻率%隨鑽測量%MRC%測量零長
지질도향%계면식별%방위가마%전자파전조솔%수찬측량%MRC%측량령장
geosteering%interface identiifcation%azimuth gamma%electromagnetic wave resistivity%measurement while drilling%MRC%measure zero-length
地质导向钻井技术已成为复杂结构井地层评价的重要手段。但常规地质导向系统测量参数测点平均测量零长大于20 m，离正钻地层较远，测量信息相对滞后，对薄油层开发尤其不利，并且常规自然伽马测量不具有测量方位信息能力，不能及时判断钻具在油层中发生的变化。胜利钻井院研制的MRC近钻头地质导向系统采用电磁波电阻率、方位伽马和井斜一体化设计技术，实现近钻头地质参数与工程参数集成测量，实现了近钻头测量，大大缩短了测量零长（测量零长小于10 m），能够实时监测地层特征信息、辨别地层变化，测量的参数具有方位特性，能够确定储集层边界的位置，利于及时调整井眼轨迹，降低打穿油层的风险，提高储层钻遇率。现场应用证明，该系统测量数据准确、工作稳定可靠，应用单井都获得了较高的储层钻遇率。通过与常规地质导向系统应用效果对比，该系统更能实现对地层特性的判断和钻头在储层内穿行精确控制，平均单井储层钻遇率提高10%以上，可为薄油层的开发提供有力的技术支撑。
地質導嚮鑽井技術已成為複雜結構井地層評價的重要手段。但常規地質導嚮繫統測量參數測點平均測量零長大于20 m，離正鑽地層較遠，測量信息相對滯後，對薄油層開髮尤其不利，併且常規自然伽馬測量不具有測量方位信息能力，不能及時判斷鑽具在油層中髮生的變化。勝利鑽井院研製的MRC近鑽頭地質導嚮繫統採用電磁波電阻率、方位伽馬和井斜一體化設計技術，實現近鑽頭地質參數與工程參數集成測量，實現瞭近鑽頭測量，大大縮短瞭測量零長（測量零長小于10 m），能夠實時鑑測地層特徵信息、辨彆地層變化，測量的參數具有方位特性，能夠確定儲集層邊界的位置，利于及時調整井眼軌跡，降低打穿油層的風險，提高儲層鑽遇率。現場應用證明，該繫統測量數據準確、工作穩定可靠，應用單井都穫得瞭較高的儲層鑽遇率。通過與常規地質導嚮繫統應用效果對比，該繫統更能實現對地層特性的判斷和鑽頭在儲層內穿行精確控製，平均單井儲層鑽遇率提高10%以上，可為薄油層的開髮提供有力的技術支撐。
지질도향찬정기술이성위복잡결구정지층평개적중요수단。단상규지질도향계통측량삼수측점평균측량령장대우20 m，리정찬지층교원，측량신식상대체후，대박유층개발우기불리，병차상규자연가마측량불구유측량방위신식능력，불능급시판단찬구재유층중발생적변화。성리찬정원연제적MRC근찬두지질도향계통채용전자파전조솔、방위가마화정사일체화설계기술，실현근찬두지질삼수여공정삼수집성측량，실현료근찬두측량，대대축단료측량령장（측량령장소우10 m），능구실시감측지층특정신식、변별지층변화，측량적삼수구유방위특성，능구학정저집층변계적위치，리우급시조정정안궤적，강저타천유층적풍험，제고저층찬우솔。현장응용증명，해계통측량수거준학、공작은정가고，응용단정도획득료교고적저층찬우솔。통과여상규지질도향계통응용효과대비，해계통경능실현대지층특성적판단화찬두재저층내천행정학공제，평균단정저층찬우솔제고10%이상，가위박유층적개발제공유력적기술지탱。
Geosteering drilling technology has become an important method for stratum assessment of wells in complex structure. However, survey points of measuring parameters of conventional geosteering system feature average measuring zero length above 20 m, relatively far away from drilling stratum, thus causing relative lag of survey information, which is in particular adverse for thin reservoir development, and conventional natural gamma surveying does not have the capacity of measuring azimuth information, and cannot timely judge change of drilling tools in oil reservoir. The electromagnetic wave resistivity, azimuth gamma and well delfection integrated design technology, which is developed by Shengli Drilling Technology Research Institute and is adopted by MRC near-bid geosteering system, realizes integrated measurement of near-bit geological parameters and engineering parameters, and realizes near-bit (measuring zero length less than 10 m) measurement, greatly shortens measuring zero length It also realizes real-time monitoring of stratum feature information as well as identiifcation of stratum change.The measurement parameters has azimuth features to enable determination of location of boundary of reservoir stratum, facilitate timely adjustment of well track, lower the risk of reservoir penetration and improve catching rate. It has been proved from ifeld application that the system features accurate measured data, stable and reliable operation, and achieves high reservoir catching rate in single-well application. In comparison with the application effects of conventional geosteering system, the system better realizes judgment of stratum features and accurate control of drill track inside reservoirs, and improves average reservoir catching rate for single well by above 10%, and can provide powerful technical support for development of thin oil reservoir.
