吉林油田浅层水平井钻井提速技术研究与应用
发布时间：2018-10-18 14:54
【摘要】：吉林油田是一个被断层复杂化的多高点穹隆背斜,扶余油田是吉林油区开发最早的油田,是一个油层埋藏浅、地质储量达亿吨级以上的大油田。由于该油田有三分之一的面积地处城区,采用常规钻井技术,有1000多万吨的探明石油储量无法开发。虽然采用浅层定向井钻井技术,使一部分油藏得以开发,但是仍然解决不了位移超过190m以上的油藏开发问题,若采用浅层水平井钻井技术,可使地面受限位移在300m以上的浅油藏得到开发,从而为扶余老区稳产、增产和油田上产产生积极影响,同时也为老区井网合理布局、提高采收率产生良好的效果。但浅层水平井有别于常规水平井,由于井比较浅,位移和井深之比相对较大,钻井和下套管过程中井眼摩阻大,如何克服钻进和下套管中的摩阻问题,就成为浅层水平井钻井需要解决的关键问题,因此需要研究适合浅地层钻井的特殊水平井钻井工艺技术。本文首先分析了该区块的地址特征,找出了浅层水平井开发过程中的技术难点,提出了一些技术措施,并深入的分析了影响机械转速的因素;再分别从钻头、钻井和水力参数、钻井液等角度出发,提出相应的优化措施,达到最终提高机械转速的目的。依此形成的一整套浅层水平井提速方案,并对该方案的现场应用进行了分析。通过本文的研究,针对浅层水平井钻井深度较浅,在开发的过程中会遇到很多技术难点,形成了一套浅层水平井提速方案,该技术安全有效的解决了因造斜点低而导致的水平段钻压不够的问题,提高了浅层水平井的钻井速度。
[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.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE243
，
本文编号：2279475
[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.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE243
，
本文编号：2279475
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