【摘要】：本學(xué)位論文結(jié)合國家科技重大專項(xiàng)“柳林示范區(qū)煤層氣井高效排采工藝技術(shù)研究”(編號:2011ZX05062-004)課題和國家自然科學(xué)基金(51174224),針對目前煤層氣井小修作業(yè)中存在的問題,結(jié)合煤層氣儲層和排采工藝要求,設(shè)計了適用于煤層氣生產(chǎn)的小修不壓井作業(yè)工藝,給出了關(guān)鍵設(shè)備的設(shè)計,完善了煤層氣排采工藝與裝備。首先介紹了國內(nèi)外油氣田用不壓井修井作業(yè)的工藝和設(shè)備現(xiàn)狀以及煤層氣儲層特征和作業(yè)要求,給出了不能直接將油氣田用不壓井修井設(shè)備移植到煤層氣井的原因;提出了煤層氣不壓井小修作業(yè)技術(shù),該技術(shù)可在不壓井、不放空的前提下,快速高效地完成小修作業(yè),有利于煤層氣井作業(yè)后的產(chǎn)能恢復(fù)和穩(wěn)產(chǎn)高產(chǎn)。接著對煤層氣不壓井小修作業(yè)系統(tǒng)的整體方案進(jìn)行了設(shè)計,并詳細(xì)介紹了其工作原理,完成了煤層氣不壓井小修作業(yè)工藝的設(shè)計,該工藝的核心是采用氣胎式環(huán)形防噴器保證管柱密封,避免了壓井或放空對煤層氣井的傷害,同時可實(shí)現(xiàn)油管接箍的直接通過,作業(yè)效率高,作業(yè)后煤層氣井產(chǎn)能恢復(fù)好。為完成上述作業(yè)要求,創(chuàng)新性地提出了氣胎式環(huán)形防噴器的結(jié)構(gòu)方案,該防噴器采用氣體作為控制防噴器開閉的動力,利用氣體的可壓縮性實(shí)現(xiàn)管柱接箍的直接通過,可以顯著地提升防噴器的密封性能和通過性;確定了防噴器的最大工作壓力、通徑、膠芯的抱緊力以及油管起下過程中的平衡點(diǎn);對防噴器的核心零部件進(jìn)行了結(jié)構(gòu)設(shè)計和校核,計算表明,氣胎式環(huán)形防噴器的各核心部件均能滿足作業(yè)要求。為了完成作業(yè),對強(qiáng)行起下裝置的起下液壓缸和游動卡瓦進(jìn)行了方案和結(jié)構(gòu)設(shè)計,完成了相應(yīng)的設(shè)計和校核計算;根據(jù)起下油缸和游動卡瓦的作業(yè)要求,設(shè)計了強(qiáng)行起下裝置的液壓控制回路;對煤層氣不壓井作業(yè)系統(tǒng)進(jìn)行了完善,并根據(jù)煤層氣小修作業(yè)工藝流程,對煤層氣不壓井小修作業(yè)系統(tǒng)進(jìn)行了作業(yè)效率評估。結(jié)果表明煤層氣不壓井小修系統(tǒng)可在規(guī)定時間內(nèi)完成作業(yè),其作業(yè)效率可達(dá)到作業(yè)要求。本文提出的煤層氣不壓井小修作業(yè)工藝及作業(yè)裝置,可以在不壓井不放空的前提下,使用小型修井車快速完成不壓井小修作業(yè),解決目前煤層氣小修作業(yè)傷害儲層、效率低等問題,這對于提升煤層氣的開發(fā)效益,促進(jìn)煤層氣的商業(yè)化開發(fā),意義重大。
[Abstract]:This dissertation is based on the national science and technology major project "study of coal bed methane well extraction technology in Liulin demonstration area" (No.: 2011ZX05062-004) and the National Natural Science Foundation (51174224), aiming at the problems existing in the small repair operation of coal bed methane well at present. According to the requirements of coalbed methane reservoir and production process, the paper designs a little workover and no well killing operation technology suitable for coal bed methane production, and gives the design of key equipment and consummates the coal bed methane production technology and equipment. This paper first introduces the process and equipment status of the workover operation in oil and gas fields at home and abroad, as well as the characteristics and operation requirements of coalbed gas reservoirs, and gives the reasons why the oil and gas fields can not be directly transplanted to coalbed gas wells by non-well killing workover equipment. This paper puts forward the small repair operation technology of coal bed methane without killing wells. The technology can quickly and efficiently finish the minor repair work without well killing and emptying, which is beneficial to the recovery of productivity and stable production and high yield after the operation of coalbed methane wells. Then, the overall scheme of the system is designed, and the working principle of the system is introduced in detail, and the design of the small repair operation process of the coal bed methane without killing well is completed. The core of this process is to use gas tube annular blowout preventer to ensure pipe string seal and avoid damage to coalbed gas well caused by well killing or emptying. At the same time, direct passage of tubing coupling can be realized, operation efficiency is high, and productivity recovery of coalbed gas well after operation is good. In order to fulfill the above operational requirements, a new structure scheme of gas tube ring blowout preventer is proposed, which adopts gas as the power to control the opening and closing of the blowout preventer, and realizes the direct passage of pipe string coupling by using the compressibility of gas. It can significantly improve the sealing performance and transmissivity of BOP, and determine the maximum working pressure, path diameter, clasp force of rubber core and the balance point in the process of tubing up and down. The structural design and verification of the core parts of the BOP are carried out. The calculation results show that the core components of the gas tube ring BOP can meet the operational requirements. In order to complete the work, the scheme and structure design of the starting and unloading hydraulic cylinder and the swimming sliver of the forced lifting device are carried out, and the corresponding design and checking calculation are completed, and according to the operation requirements of the starting and unloading cylinder and the swimming sliver, The hydraulic control circuit of the forced hoisting device is designed, and the operation system of coal bed methane without killing well is improved, and the working efficiency of the system is evaluated according to the technical process of coal bed methane minor repair. The results show that the small repair system of coal bed methane can finish the work within the specified time, and its working efficiency can meet the operational requirements. In this paper, the operation technology and operation device of coal bed gas without killing well can be quickly completed by using a small workover car to solve the damage to the reservoir caused by the small repair operation of coal bed gas. The problem of low efficiency is of great significance to promote the development benefit of CBM and to promote the commercial exploitation of CBM.
【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE37

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李龍剛;郭保衛(wèi);馮波;;滑塊式油管內(nèi)堵塞器的研制與應(yīng)用[J];石油機(jī)械;2014年09期

2 莫日和;劉冰;刁秀芳;綦耀光;;煤層氣井循環(huán)補(bǔ)水排采工藝[J];煤炭學(xué)報;2014年S1期

3 曹艷;龍勝祥;李辛子;胡小虎;王傳剛;王烽;;國內(nèi)外煤層氣開發(fā)狀況對比研究的啟示[J];新疆石油地質(zhì);2014年01期

4 樊振麗;申寶宏;胡炳南;雷毅;;中國煤礦區(qū)煤層氣開發(fā)及其技術(shù)途徑[J];煤炭科學(xué)技術(shù);2014年01期

5 綦耀光;劉冰;張芬娜;刁秀芳;莫日和;尚曉林;黃芳宇;;煤層氣井負(fù)壓射流快速排煤粉裝置研究[J];中國礦業(yè)大學(xué)學(xué)報;2014年01期

6 田玉坤;李舉平;;高壓鉆機(jī)泥漿泵用空氣包膠囊的研制[J];特種橡膠制品;2013年06期

7 胡霄;翟桂新;胡慧婷;張旺寧;高懷偉;雷寬成;;補(bǔ)償式多用途環(huán)形防噴器的研制[J];石油礦場機(jī)械;2013年03期

8 曹朋亮;馬媛;常鵬;任明月;季長亮;成育紅;李大昕;;不壓井修井作業(yè)技術(shù)在蘇東氣田的應(yīng)用評價[J];石油化工應(yīng)用;2012年07期

9 鐘功祥;劉濤;林寧;;不壓井修井作業(yè)起下管柱裝置發(fā)展及典型結(jié)構(gòu)[J];石油礦場機(jī)械;2012年04期

10 陳靈強(qiáng);蒲容春;王衛(wèi)剛;劉宏亮;賀環(huán)慶;張力;;WY78-52型空氣包的有限元分析及優(yōu)化設(shè)計[J];石油礦場機(jī)械;2012年04期

相關(guān)博士學(xué)位論文 前2條

1 劉冰;煤層氣井排采和射流負(fù)壓作業(yè)的排煤粉理論與技術(shù)研究[D];中國石油大學(xué)(華東);2014年

2 張芬娜;煤層氣井產(chǎn)氣通道破壞機(jī)理與修復(fù)技術(shù)研究[D];中國石油大學(xué)（華東）;2013年

相關(guān)碩士學(xué)位論文 前4條

1 苑珍東;基于鏈?zhǔn)窖h(huán)起升系統(tǒng)的油田小修作業(yè)自動化裝置研究[D];中國石油大學(xué)(華東);2014年

2 王超;煤層氣井負(fù)壓射流排煤粉作業(yè)裝置的設(shè)計[D];中國石油大學(xué)（華東）;2013年

3 史清春;不壓井作業(yè)設(shè)備的研究設(shè)計[D];西華大學(xué);2011年

4 王剛;一種新型帶壓防噴密封系統(tǒng)的研制[D];中國石油大學(xué);2010年

，

本文編號：2280619