本文關(guān)鍵詞： 水平井注水 分注管柱 分層測(cè)試　出處：《中國(guó)石油大學(xué)(華東)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：水平井注水比常規(guī)注水井具有較高的注入速度和較低的注入壓力,注水波及系數(shù)也比直井提高很多(平均10%以上),有利于大幅度提高采收率。當(dāng)水平井儲(chǔ)層中非均質(zhì)性嚴(yán)重,存在滲透性較差的夾層或者隔層時(shí),采用籠統(tǒng)注水管柱,只會(huì)提高單層段的注入強(qiáng)度,而整個(gè)水平段的注入強(qiáng)度相對(duì)較低,不能實(shí)現(xiàn)均衡驅(qū)替的注水效果。因此,開(kāi)展了水平井分段注水管柱配套技術(shù)研究,首先對(duì)勝利油田水平井注水現(xiàn)狀進(jìn)行詳細(xì)調(diào)研,分析了水平井分段注水管柱應(yīng)該滿足的基本條件和應(yīng)該具備的功能,根據(jù)水平井井深軌跡,完成分注管柱可下入性分析,優(yōu)化了兩層和三層水平井分注管柱的總設(shè)計(jì)方案,通過(guò)對(duì)水平井分層注水管柱的結(jié)構(gòu)優(yōu)化、封隔器密封件扶正居中技術(shù)研究、管柱配套工具的設(shè)計(jì)研制,以及水平井測(cè)試工藝優(yōu)化和投撈調(diào)配工藝技術(shù)研究,初步形成一套有效的水平井分層(段)注水工藝技術(shù),并開(kāi)展了分注管柱和相關(guān)配套工具的室內(nèi)模擬試驗(yàn),在YAA3P2井進(jìn)行了現(xiàn)場(chǎng)應(yīng)用。通過(guò)室內(nèi)和現(xiàn)場(chǎng)試驗(yàn)研究表明,設(shè)計(jì)的水平井分注工藝能夠滿足分注2-3層的現(xiàn)場(chǎng)需求,耐壓達(dá)到了30MPa,耐溫120℃,現(xiàn)場(chǎng)應(yīng)用效果較為明顯,實(shí)現(xiàn)了水平井分段均衡配水,保證注水剖面均勻推進(jìn),對(duì)提高注水驅(qū)波及體積和水驅(qū)效率,提高儲(chǔ)量動(dòng)用程度和單元采收率具有重要意義。
[Abstract]:Horizontal well injection has higher injection rate and lower injection pressure than conventional water injection well, and the water injection sweep coefficient is also much higher than that of straight well (the average is more than 10%, which is beneficial to increase oil recovery greatly.) when the reservoir heterogeneity of horizontal well is serious, When there is interlayer or interlayer with poor permeability, the injection intensity of single layer can only be increased by using general injection string, but the injection intensity of the whole horizontal section is relatively low, which can not realize the water injection effect of balanced displacement. The matching technology of horizontal well water injection pipe string is studied. Firstly, the present situation of horizontal well injection in Shengli Oilfield is investigated in detail, and the basic conditions and functions of horizontal well water injection pipe string are analyzed. According to the depth trajectory of horizontal well, the down-entry analysis of separate injection string is completed, and the overall design scheme of separate injection string in two and three layers horizontal wells is optimized, and the structure of separate injection string in horizontal well is optimized. A set of effective horizontal well layering (section) water injection technology has been preliminarily formed by studying the centralization technology of Packer seals, the design and development of pipe string matching tools, as well as the optimization of horizontal well testing technology and the technology of throwing and fishing adjustment. The laboratory simulation test of separate injection string and related tools is carried out, and the field application is carried out in YAA3P2 well. The results of laboratory and field tests show that the designed horizontal well injection separation process can meet the field requirements of split injection of 2-3 layers. The water pressure is 30 MPA, the temperature is 120 鈩，

本文編號(hào)：1533565