發(fā)布時間：2018-04-06 22:09

  本文選題：庫車地區(qū)　切入點：低傷害鉆井液　出處：《西安石油大學》2015年碩士論文

【摘要】：塔里木盆地庫車地區(qū)構造地層十分復雜,鹽膏層、高壓鹽水層、高壓油氣層以及破碎性地層普遍發(fā)育,加之受高地應力、高地層傾角的影響,使得山前構造異常高壓地層和較高坍塌應力地層普遍存在,由于鉆井地質(zhì)存在的復雜性,會對儲層和鉆井配件產(chǎn)生相應的傷害,為此優(yōu)選出適合庫車地區(qū)低傷害的鉆井液已經(jīng)刻不容緩。本文大量分析調(diào)研了塔里木氣田,特別是庫車山前地區(qū)鉆井過程中出現(xiàn)的失水、攜巖、磨阻大等與鉆井液相關的問題,以及應用常規(guī)鉆井液體系在庫車地區(qū)不同區(qū)塊不同地層應用時存在的井塌、鉆井液性能差、儲層傷害等問題,針對上述問題,通過在塔里木油田實驗中心進行的低傷害鉆井液室內(nèi)評價研究,評價開發(fā)了三套低傷害鉆井液體系:抑制性和防磨效果好的抗高溫水基鉆井液體系;穩(wěn)定性和儲層保護效果好的高密度油基鉆井液;抑制性和抗污染性好的復合有機鹽鉆井液體系。評價的三套低傷害鉆井液體系在庫車地區(qū)的現(xiàn)場應用中未出現(xiàn)卡鉆等鉆井問題,基本上滿足了庫車區(qū)塊深井、超深井鉆井要求。針對三種低傷害鉆井液體系在現(xiàn)場應用中的性能特點和不同區(qū)塊不同地層對鉆井液體系的要求,優(yōu)選出了不同地層條件下與其相適應的鉆井液體系。本論文的研究有助于庫車山前區(qū)塊鉆井作業(yè)的快速、安全進行。
[Abstract]:The tectonic strata in Kuqa area of Tarim Basin are very complicated, the salt gypsum layer, high pressure salt water layer, high pressure oil and gas layer and fractured strata are widely developed, which are also affected by high ground stress and high formation dip angle.As a result of the complexity of drilling geology, the abnormal high pressure formation and high collapse stress formation of the Foreland structure will cause corresponding damage to the reservoir and drilling accessories.Therefore, it is urgent to select the drilling fluid suitable for low damage in Kuqa area.In this paper, the problems related to drilling fluid, such as water loss, rock carrying and wear resistance, which occurred during drilling in Tarim gas field, especially in Kuqa Piedmont area, are analyzed and investigated.And the problems such as well collapse, poor drilling fluid performance, reservoir damage and so on existing in the application of conventional drilling fluid system in different blocks and different formations in Kuqa area.Through the laboratory evaluation of low damage drilling fluid in Tarim Oilfield Experimental Center, three sets of low damage drilling fluid systems were evaluated and developed: high temperature water-based drilling fluid system with good inhibition and wear resistance effect;High density oil based drilling fluid with good stability and reservoir protection, and complex organic salt drilling fluid system with good inhibition and pollution resistance.The three sets of low damage drilling fluid system evaluated in the field application in Kuqa area did not have drilling problems such as drilling jam, which basically met the requirements of deep well drilling and ultra-deep well drilling in Kuqa block.According to the performance characteristics of three kinds of low damage drilling fluid systems in field application and the requirements of different formations in different blocks for drilling fluid systems, the drilling fluid systems adapted to them under different formation conditions were selected.The research in this paper is helpful to the rapid and safe drilling in Kuqa Piedmont area.
【學位授予單位】：西安石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE254

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本文編號：1719111