冀东油田深斜井分层注水工艺技术研究与应用

发布时间：2018-03-18 10:39

本文选题：深斜井　切入点：分层注水　出处：《西南石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：分层注水工艺技术是解决非均质油藏的层间矛盾,提高注水波及系数,保持油田稳产的重要技术。冀东南堡滩海油气田属近饱和复杂断块油藏,天然能量不足；注水开发已成为滩海油田开发的必要手段。另一方面,冀东南堡滩海油田开发主要采用人工岛海油陆采开发模式,井型主要以定向井和深斜井为主,井身结构、井眼轨迹复杂、分注跨度大,导致分注管柱起下困难、密封效果差、投捞测试成功率低。因此,深斜井分注工艺技术是滩海有效注水的关键技术；结合国内外相关技术调研结果,根据南堡油田注水井的井身结构和生产特点,充分考虑国内分层注水工艺及测配技术现状等因素,确定分层注水技术对策。本文在国内外分层注水工艺研究的基础上,开展了适用于高温、高压复杂井的分层注水工艺及配套工具研制、室内试验和现场试验的研究工作。本论文具体研究工作如下：(1)完成了深斜井分层注水工艺技术国内外资料调研,较全面地掌握了深斜井分层注水工艺技术现状、存在的主要问题以及技术发展前景等。(2)完成了分层注水工艺管柱研究,形成了针对不同分注段跨度逐级解卡的分层注水工艺管柱,提高了密封效果和耐高温高压要求,延长了工作寿命。(3)完成了分注管柱安全下入、起出配套工艺技术研究。研发了外径小、长度短、防撞能力强的分注工具,提高下入可靠性；降低起管柱负荷,提高安全起出可靠性；在分注管柱增加解封安全接头,遇卡可通过逐级丢手分段打捞的方式起出分注管柱,减少了卡管柱造成的大修。(4)完成了针对不同井斜分层注水工艺技术研究,形成了桥式偏心定量分注技术、同心测调一体化分注技术、非接触式遥控测调分注技术,满足了深斜井分层注水工艺及测配的相关要求,提高了分注效果。(5)完成了分注工艺及配套工具的室内和现场试验研究,室内和现场试验表明,满足设计要求。本文对分层注水工艺进行了深入的研究,为高温高压深斜井的分层注水作业提供了一种新型的更加简单、可靠、高效、安全的施工工艺理念及配套工具。
[Abstract]:The technology of stratified water injection is an important technique to solve the interlayer contradiction in heterogeneous reservoirs, to increase the sweep coefficient of water injection and to maintain stable production of oil fields. The natural energy is insufficient in the near saturated complex fault block reservoir of Baotan Hai oil and gas field in the southeast of Hebei Province. Water injection development has become a necessary means for the development of beach oil fields. On the other hand, the development of beach sea oil fields in southeast Hebei Province mainly adopts the artificial island oil and land production mode, the wells are mainly directional wells and deep inclined wells, the wellbore structure and the borehole trajectory are complex. The long span of separate injection leads to difficulty in lifting pipe string, poor sealing effect and low success rate of fishing test. Therefore, the technology of split injection in deep inclined well is the key technology of effective water injection in beach, and combined with the research results of domestic and foreign related technologies, According to the wellbore structure and production characteristics of water injection wells in Nanbao Oilfield, and considering the factors such as domestic stratified water injection technology and the present situation of testing and matching technology, the countermeasures of stratified water injection technology are determined in this paper, based on the domestic and foreign research on the stratified water injection technology. The development of stratified water injection technology and supporting tools suitable for high temperature and high pressure complex wells has been carried out. The detailed research work of this paper is as follows: 1) the domestic and foreign data of deep deviated well stratified water injection technology have been investigated, and the present situation of deep inclined well stratified water injection technology has been comprehensively grasped. The main existing problems and technical development prospects, etc., have completed the research on the pipe string of the stratified water injection process, and have formed the stratified water injection process string for the different injection section span step by step, which improves the sealing effect and the requirement of high temperature and high pressure. It has extended the working life. 3) has completed the safety entry and exit technology research of the separate injection string, developed the small outside diameter, short length, strong anti-collision ability, improved the down-entry reliability, reduced the load of the pipe string, and developed the injection tool with small outer diameter, short length and strong anti-collision ability, so as to reduce the load of the pipe string. To improve the reliability of safety ejection; to increase the unsealing safety joint in the split-injection string, the split-injection string can be raised by using step by step handless piecewise salvage, By reducing the overhauling caused by the pipe string, the paper has completed the research on the technology of oblique stratified water injection for different wells, and formed the bridge eccentric quantitative injection technology, the integrated injection technology of concentric measurement and adjustment, and the non-contact remote control measuring and adjusting injection technology. It meets the requirements of deep inclined well stratified water injection technology and its testing and matching, and improves the effect of separate injection. 5) the laboratory and field tests of the separate injection process and supporting tools are completed. The results of laboratory and field tests show that, To meet the design requirements, this paper makes a thorough study on the stratified water injection technology, which provides a new simple, reliable, efficient and safe construction technology concept and supporting tools for the stratified water injection operation of high temperature and high pressure deep inclined wells.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.6

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