發(fā)布時間：2018-10-18 14:54

【摘要】：吉林油田是一個被斷層復(fù)雜化的多高點穹隆背斜,扶余油田是吉林油區(qū)開發(fā)最早的油田,是一個油層埋藏淺、地質(zhì)儲量達億噸級以上的大油田。由于該油田有三分之一的面積地處城區(qū),采用常規(guī)鉆井技術(shù),有1000多萬噸的探明石油儲量無法開發(fā)。雖然采用淺層定向井鉆井技術(shù),使一部分油藏得以開發(fā),但是仍然解決不了位移超過190m以上的油藏開發(fā)問題,若采用淺層水平井鉆井技術(shù),可使地面受限位移在300m以上的淺油藏得到開發(fā),從而為扶余老區(qū)穩(wěn)產(chǎn)、增產(chǎn)和油田上產(chǎn)產(chǎn)生積極影響,同時也為老區(qū)井網(wǎng)合理布局、提高采收率產(chǎn)生良好的效果。但淺層水平井有別于常規(guī)水平井,由于井比較淺,位移和井深之比相對較大,鉆井和下套管過程中井眼摩阻大,如何克服鉆進和下套管中的摩阻問題,就成為淺層水平井鉆井需要解決的關(guān)鍵問題,因此需要研究適合淺地層鉆井的特殊水平井鉆井工藝技術(shù)。本文首先分析了該區(qū)塊的地址特征,找出了淺層水平井開發(fā)過程中的技術(shù)難點,提出了一些技術(shù)措施,并深入的分析了影響機械轉(zhuǎn)速的因素;再分別從鉆頭、鉆井和水力參數(shù)、鉆井液等角度出發(fā),提出相應(yīng)的優(yōu)化措施,達到最終提高機械轉(zhuǎn)速的目的。依此形成的一整套淺層水平井提速方案,并對該方案的現(xiàn)場應(yīng)用進行了分析。通過本文的研究,針對淺層水平井鉆井深度較淺,在開發(fā)的過程中會遇到很多技術(shù)難點,形成了一套淺層水平井提速方案,該技術(shù)安全有效的解決了因造斜點低而導(dǎo)致的水平段鉆壓不夠的問題,提高了淺層水平井的鉆井速度。
[Abstract]:Jilin oilfield is a multi-high point dome anticline complicated by fault. Fuyu oilfield is the earliest oilfield developed in Jilin oil area. It is a large oil field with shallow buried reservoir and geological reserves of more than 100 million tons. Because 1/3 of the oil field is located in the urban area, more than 10 million tons of proven oil reserves can not be developed by conventional drilling technology. Although some reservoirs can be developed by using shallow directional drilling technology, the problem of reservoir development with a displacement of more than 190m can still not be solved. If shallow horizontal well drilling technology is used, The shallow reservoir with limited surface displacement above 300m can be developed, which will have a positive effect on stable production, production increase and oil field production in Fuyu old area, at the same time, it will also produce a good effect for rational layout of well pattern in old area and improving recovery factor. However, the shallow horizontal well is different from the conventional horizontal well. Because the well is relatively shallow, the ratio of displacement to depth is relatively large, and the borehole friction is large during drilling and casing drilling, how to overcome the problem of friction in drilling and casing, Therefore, it is necessary to study the drilling technology of special horizontal wells suitable for shallow formation drilling. This paper first analyzes the address characteristics of the block, finds out the technical difficulties in the development of shallow horizontal wells, puts forward some technical measures, and analyzes the factors that affect the mechanical speed, and then analyzes the drill bit, drilling and hydraulic parameters, respectively. From the angle of drilling fluid and so on, the corresponding optimization measures are put forward to achieve the purpose of increasing the mechanical speed finally. According to this, a set of shallow horizontal well speedup scheme is formed, and the field application of this scheme is analyzed. Through the research of this paper, aiming at the shallow horizontal well drilling depth is relatively shallow, in the process of development will meet a lot of technical difficulties, a set of shallow horizontal well speed raising plan has been formed. This technique can solve the problem of insufficient drilling pressure in horizontal section caused by low inclined point, and improve the drilling speed of shallow horizontal well.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE243
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本文編號：2279475