本文選題：分支井重入技術(shù) + 膨脹管定位　； 參考：《西南石油大學》2014年碩士論文

【摘要】：多分支井完井對各個分支段的隔離、控制以及井壁穩(wěn)定技術(shù)日趨成熟,我國近幾年在多分支井完井方面有很大進步,研制了具有自主知識產(chǎn)權(quán)的完井系統(tǒng),但是,與國外先進的完井裝置相比,大多是針對某一區(qū)塊油氣田設(shè)計的,缺乏普遍適用性,在工藝上很難大范圍推廣。我國在解決多分支井筒的隔離問題上與國外還存在差距,主要體現(xiàn)在完井井下裝置智能程度不高、可控性差等方面。本文通過對國內(nèi)外分支井完井系統(tǒng)及配套工具調(diào)研,從分支井完井技術(shù),及增產(chǎn)措施效果評價方面入手,結(jié)合合川001-Z45井完井設(shè)計及施工,研究分支井的重入技術(shù)和膨脹管定位多分支井技術(shù),并對合川001-Z45井增產(chǎn)改造措施進行效果評價,得出以下認識和結(jié)論： (1)分支井3-5級完井系統(tǒng)主要由下入定向和定位裝置、開窗磨銑裝置、側(cè)鉆導向系統(tǒng)、打撈回收裝置、重進入導向裝置、懸掛裝置和不同完井方式配套工具組成。 (2)分支井叉口部位對水泥環(huán)承壓能力要求較高,需要開發(fā)專用的窗口密封劑和特殊的水泥漿來提高其固井質(zhì)量和水泥環(huán)強度。 (3)膨脹管定位方法能夠提供更大井內(nèi)通徑,利于常規(guī)完井、增產(chǎn)、修井工具使用,因而具有較好適應性,但也存在一定風險。 (4)BAKER壁鉤式懸掛系統(tǒng)不僅能提供分支井主、分支井眼分支點處的機械支撐,而且為分支井主、分支井眼提供重入通道,重入方式有多種,且風險較低。 (5)合川001-Z45分支井鉆完井及增產(chǎn)過程中選擇性重入技術(shù)：鉆井過程中,分支井井眼重入采用斜向器重入系統(tǒng)；完井過程中,分支井井眼選擇性重入采用新疆預開孔懸掛系統(tǒng)；增產(chǎn)作業(yè)過程中,分支井井眼選擇性重入可采用彎接頭；后期修井過程中,分支井井眼選擇性重入采用探頭導向重入系統(tǒng)。 (6)合川001-Z45分支井增產(chǎn)改造技術(shù)：針對合川須家河氣藏儲層縱向上層多、跨距大,采用分層壓裂,壓裂設(shè)計以“增加縫長、控制縫高、降低傷害、快速返排”為優(yōu)化設(shè)計原則；須二上部施工壓力高,可適當控制最高砂濃度以降低施工風險；考慮到分支井套管開窗處承壓值低,施工時需控制套壓；排液推薦采用“控制回壓、逐級放大油嘴、強制閉合”方法,需防止支撐劑過度回流。
[Abstract]:The isolation, control and sidewall stabilization technology of multi-branch well completion have matured day by day. In recent years, China has made great progress in multi-branch well completion, and has developed a completion system with independent intellectual property rights. Compared with foreign advanced well completion devices, most of them are designed for a certain block of oil and gas fields, which lacks universal applicability and is difficult to be widely popularized in technology. There is still a gap between our country and foreign countries in solving the problem of multi-branch wellbore isolation, which is mainly reflected in the low intelligence degree and poor controllability of the completion downhole device. Based on the investigation of the completion system and supporting tools of the branch well at home and abroad, this paper starts with the evaluation of the completion technology of the branch well and the effect of the stimulation measures, and combines with the completion design and operation of Hechuan 001-Z45 well. This paper studies the reentry technology of branched well and the multi-branch well technology of expansion tube location, and evaluates the effect of the measures of increasing production and revamping of Hechuan 001-Z45 well, and obtains the following understanding and conclusion: Grade 3-5 completion system of branch well is mainly composed of down-entry orientation and positioning device, window milling device, sidetracking guide system, fishing recovery device, re-entry guide device, suspension device and supporting tools for different completion modes. (2) the forks of branch wells require high pressure bearing capacity of cement ring, so it is necessary to develop special window sealant and special cement slurry to improve cementing quality and cement ring strength. 3) the expansion tube positioning method can provide larger inner diameter of wells, which is beneficial to conventional completion, production increase and workover tools, so it has good adaptability, but there are also some risks. The hook suspension system can not only provide mechanical support at branch well main and branch hole branch point, but also provide reentry passage for branch well owner and branch hole. There are many ways of reentry, and the risk is low. In Hechuan 001-Z45 branch well drilling and completion and selective re-entry technology during the production increase process: during the drilling process, the branch hole re-entry system is used, the branch hole selective re-entry system is used in the completion process, and the Xinjiang pre-opening hole suspension system is used in the branch hole selective re-entry system. In the process of increasing production, the curved joint can be used in the selective re-entry of the branched borehole, and in the later workover, the probe guided reentry system is used in the selective re-entry of the branched well. (6) Hechuan 001-Z45 branch well stimulation and reconstruction technology: aiming at the high vertical upper layer and long span of Xujiahe gas reservoir in Hechuan, adopting stratified fracturing, fracturing design principle is "increase fracture length, control fracture height, reduce damage, and quickly reverse discharge" as the optimum design principle; The upper part should have high construction pressure, the highest sand concentration can be controlled appropriately to reduce the construction risk; considering the low pressure value of the casing opening in the branch well, the casing pressure should be controlled during construction; and the liquid discharge recommended "controlling the back pressure and amplifying the oil nozzle step by step," Forced closure method to prevent excessive backflow of proppant.
【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TE257

【參考文獻】

相關(guān)期刊論文 前10條

1 趙衛(wèi)紅;多分支井技術(shù)日趨完善──Chlifornia鉆成第一口第6類分支井[J];國外油田工程;1999年03期

2 向興華,劉洪彬,張林平;朝著簡單、低風險的多分支井發(fā)展[J];國外油田工程;2002年11期

3 喬磊;申瑞臣;黃洪春;王開龍;鮮保安;;沁水盆地南部低成本煤層氣鉆井完井技術(shù)[J];石油勘探與開發(fā);2008年04期

4 易發(fā)新;喻晨;李松濱;朱太輝;;魚刺分支水平井在稠油油藏中的應用[J];石油勘探與開發(fā);2008年04期

5 周守為;孫福街;曾祥林;房茂軍;;稠油油藏分支水平井適度出砂開發(fā)技術(shù)[J];石油勘探與開發(fā);2008年05期

6 張燕萍;任榮權(quán);王輝;王軍;;基于膨脹管定位系統(tǒng)的多分支井鉆完井技術(shù)[J];石油勘探與開發(fā);2009年06期

7 練章華,施太和,韓建增;膨脹套管摩擦系數(shù)與軸向位移的模擬研究[J];石油機械;2002年01期

8 張建兵,施太和,練章華;鉆井實體膨脹管技術(shù)[J];石油機械;2003年S1期

9 鄧旭;;長城鉆探分支井鉆、完井四大核心技術(shù)[J];石油科技論壇;2010年02期

10 張焱,劉坤芳,曹里民,余雷,施太和;水平井待鉆井眼軌跡最優(yōu)化設(shè)計方法研究[J];石油學報;2001年01期

，

本文編號：1916595