文南油田不压井作业防喷泵研制与应用

发布时间：2018-07-25 19:57

【摘要】：文南油田异常高压、高温、高气油比、低渗透、高饱和压力等特殊的油藏特点决定了储层保护和井控工作难度,在开发中后期,油井压力逐年降低,中高压井数比例小,迫切需要采用不压井;如何封堵井下工具,或设计可开关便于封堵的井下工具是不压井作业中一个非常迫切的研究课题;一般不压井作业,采用油管堵塞器封堵油管,修井作业完成之后,去除油管堵塞器,进行投产;但对于间喷井或溢流井,常规抽油泵没有防喷作用,仍然可能发生井喷。为此,本文结合常规抽油泵的抽吸功能和起下管柱作业中堵塞器的封堵油管功能,首次提出管式防喷抽油泵和杆式防喷抽油泵两种方案;从泵径、冲程、冲次等方面确定了适应间喷井的新型不压井作业防喷泵整体技术参数,运用Pro/E软件建立了防喷作业总成的三维模型,运用ANSYS软件对关键零件内芯筒及弹簧座进行了有限元计算;通过在文88-59和文72-184两口油井的现场应用,验证了防喷泵不仅在下泵投产时能够起到防喷作用,而且在投产之后,也能预防井喷的发生,达到了研制不压井作业管式防喷泵的目的。
[Abstract]:The special reservoir characteristics such as abnormal high pressure, high temperature, high gas / oil ratio, low permeability and high saturation pressure in Wennan Oilfield determine the difficulty of reservoir protection and well control. In the middle and late stage of development, the oil well pressure decreases year by year and the proportion of middle and high pressure wells is small. How to seal downhole tools or to design downhole tools that can be switched on and off for plugging is a very urgent research topic in non-well killing operations. In general, tubing plugging devices are used for plugging tubing. After the workover operation is completed, the tubing plugging device is removed and put into production, but for the interjet well or overflow well, the conventional pumping pump has no blowout prevention effect, and the blowout may still occur. For this reason, combining the sucking function of conventional pumping pump and plugging tubing function of plugging device in the operation of starting and lowering tubing string, two schemes of tube-type anti-injection sucker pump and rod-type anti-injection sucker pump are put forward for the first time, from pump diameter, stroke, In the aspects of punching and secondary, the integral technical parameters of the new type of anti-blowout pump are determined, the 3D model of the anti-blowout assembly is established by using Pro/E software, and the finite element calculation of the core barrel and spring seat of the key parts is carried out by using ANSYS software. Through the field application in two wells, Wen 88-59 and Wen 72-184, it has been proved that the blowout prevention pump can not only prevent the blowout when the next pump is put into operation, but also prevent the blowout after putting into production. The purpose of developing pipe blowout preventer pump without well killing is achieved.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE931.1

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