煤层气L型水平井新型杆式泵排采工艺及应用
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摘要
针对煤层气L型水平井普遍存在的下泵位置受井斜限制、煤粉等固体颗粒卡堵泵、气体进入泵筒降低泵效、检泵周期短等问题,研制了一种新型水平井杆式抽油泵,并对其支撑坐封总成进行了改进,配套设计了一种新型的煤粉滤过式气锚,形成了煤层气L型水平井配套的防泵漏失、防卡堵泵、防气体影响的杆式泵排采工艺技术。该工艺进行了3 a现场试验,与前期常用的水力射流泵、电潜螺杆泵、普通管式泵、普通杆式泵等进行了综合分析对比。结果表明:新型杆式泵下入井斜达到70~82°,泵效达到45%~95%,平均检泵周期是原来的3.6倍且继续有效。该工艺较好地满足了煤层气L型水平井排采要求,工艺适应性和可靠性大幅提高,可进一步推广使用。
The L-type horizontal well production in coalbed gas reservoir is generally limited by many problems,including the limited downhole pump position results from well inclination,pump stuck or block by pulverized coal and other solid particles,low pump efficiency by gas inflow,short pump inspection cycle,etc. A new rod pump for horizontal well is developed and its support setting assembly is improved. A new gas anchor with pulverized coal filtration is designed and matched to develop a rod pump recovery technology with pump loss prevention,anti-stuck and anti-block and anti-gas inflow for the L-type horizontal well in coalbed gas reservoir. A field test is implemented for 3 years and the corresponding performance is compared with that of hydraulic jet pump,electric submersible progressive cavity pump,conventional tubing pump,conventional rod pump,etc. Research indicates that the new rod pump can setting inclination is up to 70 ~ 82 °,the pump efficiency reaches 45% ~ 95% and the average pump inspection cycle is 3. 6 times of the original and continue to run. The production performance of L-type horizontal well in coalbed gas reservoir can be efficiently improved by this technology with better adaptability and reliability,which shows a favorable promoted application.
The L-type horizontal well production in coalbed gas reservoir is generally limited by many problems,including the limited downhole pump position results from well inclination,pump stuck or block by pulverized coal and other solid particles,low pump efficiency by gas inflow,short pump inspection cycle,etc. A new rod pump for horizontal well is developed and its support setting assembly is improved. A new gas anchor with pulverized coal filtration is designed and matched to develop a rod pump recovery technology with pump loss prevention,anti-stuck and anti-block and anti-gas inflow for the L-type horizontal well in coalbed gas reservoir. A field test is implemented for 3 years and the corresponding performance is compared with that of hydraulic jet pump,electric submersible progressive cavity pump,conventional tubing pump,conventional rod pump,etc. Research indicates that the new rod pump can setting inclination is up to 70 ~ 82 °,the pump efficiency reaches 45% ~ 95% and the average pump inspection cycle is 3. 6 times of the original and continue to run. The production performance of L-type horizontal well in coalbed gas reservoir can be efficiently improved by this technology with better adaptability and reliability,which shows a favorable promoted application.
引文
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[13]JOHNSON B A.Coal bed methane artificial lift challenges from Alberta[C].SPE138098,2010:1-8.
[14]DROZDOV A N,DROZDOV N A.Prospects of development of Jet Pump's well operation technology in Russia[C].SPE176676,2015:1-16.
[15]KRAWIEC M B,FINN C M,COCKBILL J R,et al.Dewatering coalbed methane wells using ESPCPs[C]//LEA J F,NICKENS H V,WELLS M R.Gas well deliquification:second edition(gulf drilling guides).Houston:Gulf Publishing Company,2008:361-382.
[16]袁少锋,刘国强,席欢,等.一种煤粉滤过式气锚:ZL201520940868X[P].2015-11-23.
[17]张庆元.大斜度水平井有杆泵举升技术[J].特种油气藏,2009,16(增刊2):75-78.
[18]杨立龙.稠油油藏水平井配套工艺技术[J].特种油气藏,2016,23(3):140-143.
[19]王凤清,韩军,张康,等.一种杆式泵支撑总成:ZL2014207095224[P].2014-11-21.
[2]OYEWOLE P O,LEA J F.Artificial-lift selection strategy for the life of a gas well with some liquid production[C].SPE115950,2008:1-14.
[3]刘一楠,张贺.柳林地区煤层气水平井排采技术分析[J].中国煤层气,2013,10(6):13-17.
[4]秦义,李仰民,白建梅,等.沁水盆地南部高煤阶煤层气井排采工艺研究与实践[J].天然气工业,2011,31(11):22-25.
[5]SIMPSON D A,LEA J F,COX J C.Coal bed methane production[C].SPE80900,2003:1-10.
[6]TOWLER B,FIROUZI M,UNDERSCHULTZ J,et al.An overview of the coal seam gas developments in Queensland[J].Journal of Natural Gas Science&Engineering,2016,31(4):249-271.
[7]LAN Wenjian,WANG Hanxiang,YANG Siyu,et al.Study on the migration of pulverized coal in CBM wellbore[J].Journal of Petroleum Science and Engineering,2017,156(7):740-747
[8]东振,鲍清英,张义.煤层气井排采阶段煤粉运移条件研究[J].特种油气藏,2015,22(2):143-146.
[9]BASSETT L.Guidelines to successful dewatering of CBM wells[C].SPE104290,2006:1-5.
[10]刘新福,吴建军,綦耀光,等.煤层气井气体对有杆泵排采的影响[J].中国石油大学学报(自然科学版),2011,35(4):144-149.
[11]朱庆忠,杨延辉,王玉婷,等.高阶煤层气高效开发工程技术优选模式及其应用[J].天然气工业,2017,37(10):27-33.
[12]张永平,杨延辉,邵国良,等.沁水盆地樊庄—郑庄区块高煤阶煤层气水平井开采中的问题及对策[J].天然气工业,2017,37(6):46-53.
[13]JOHNSON B A.Coal bed methane artificial lift challenges from Alberta[C].SPE138098,2010:1-8.
[14]DROZDOV A N,DROZDOV N A.Prospects of development of Jet Pump's well operation technology in Russia[C].SPE176676,2015:1-16.
[15]KRAWIEC M B,FINN C M,COCKBILL J R,et al.Dewatering coalbed methane wells using ESPCPs[C]//LEA J F,NICKENS H V,WELLS M R.Gas well deliquification:second edition(gulf drilling guides).Houston:Gulf Publishing Company,2008:361-382.
[16]袁少锋,刘国强,席欢,等.一种煤粉滤过式气锚:ZL201520940868X[P].2015-11-23.
[17]张庆元.大斜度水平井有杆泵举升技术[J].特种油气藏,2009,16(增刊2):75-78.
[18]杨立龙.稠油油藏水平井配套工艺技术[J].特种油气藏,2016,23(3):140-143.
[19]王凤清,韩军,张康,等.一种杆式泵支撑总成:ZL2014207095224[P].2014-11-21.