新型水溶性暂堵剂在重复压裂中的暂堵转向效果

姜伟; 管保山; 李阳; 才博

doi:10.3969/j.issn.1001-5620.2017.06.019

新型水溶性暂堵剂在重复压裂中的暂堵转向效果

doi: 10.3969/j.issn.1001-5620.2017.06.019

中国石油勘探开发研究院压裂酸化技术服务中心, 河北廊坊 065007

基金项目:

国家油气科技重大专项“储层改造关键技术及装备”（2016ZX05023）。

详细信息

作者简介:
姜伟,工程师,硕士研究生,现在主要从事储层改造研究工作。E-mail:jiangwei69@petrochina.com.cn。

中图分类号: TE357.12
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出版历程
- 收稿日期: 2017-08-23
- 刊出日期: 2017-11-30

A New Water Soluble Temporary Plugging Agent and its Temporary Plugging and Diverting Effects in Re-fracturing

Fracturing and Acidizing Technical Service Center, Research Institute of Petroleum Exploration and Development, Langfang, Hebei 065007

摘要

摘要: 重复压裂是恢复油井产能、提高最终采收率的重要方式之一，目前最有效的重复压裂方式是暂堵剂的转向压裂改造。采用可生物降解材料、高分子量聚合物、膨胀剂和固化剂合成了一种环保型水溶性暂堵转向剂，该暂堵剂颗粒尺寸可根据裂缝宽度定制，水溶性良好，压裂施工结束后4 h可水溶降解；岩心实验表明，该水溶性暂堵剂岩心封堵效率可达99%以上，承压40 MPa以上，且水溶降解后对岩心的伤害较小，满足重复压裂施工各项指标的要求。现场试验1口井，施工过程中加入暂堵剂后施工压力上升3 MPa，起到了良好的暂堵效果，压后增油量为1.1 t/d，含水率下降5%，说明该压裂模式能够起到恢复油井产能、降低含水的目的。
- 暂堵剂 /
- 水溶性 /
- 重复压裂 /
- 暂堵转向 /
- 含水率
Abstract: Re-fracturing of an oil well is one of the important methods of restoring its production capacity and enhancing its ultimate recovery. The most effective re-fracturing method presently in use is to fracture the reservoir formations with fracturing fluid containing temporary plugging agent functioned as diverting agent. An environmentally friendly water soluble temporary plugging diverting agent has recently been developed with biodegradable materials, high molecular weight polymers, an expansion agent and a solidifying agent. The particle sizes of this temporary plugging agent can be customized to fit for the width of fractures into which the particles will go in. The temporary plugging agent dissolved 4 hours after the fracturing operations. Laboratory experiments on cores indicated that 99% of the pores in the cores can be plugged by this plugging agent, with pressure bearing capacity of at least 40 MPa. The dissolved plugging agent had only minor impairment to the permeability of cores, meaning that the temporary plugging agent had satisfied the needs of fracturing job. On field trial on a well, after adding the temporary plugging agent, operating pressure went up to 3 MPa, proving that the temporary plugging agent functioned very well. Daily oil production rate of the fractured well was increased by 1.1 t, and water cut of the well was reduced by 5%, indicating that the use of this fracturing method has realized the goal of restoring production capacity and reducing water cut.
- Temporary plugging agent /
- Water solubility /
- Re-fracturing /
- Temporary plugging diverting /
- Water cut

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参考文献(19)

[1]	王永昌,姜必武,马延风,等. 安塞油田低渗透砂岩油藏重复压裂技术研究[J]. 石油钻采工艺,2005,27(5):78-80. WANG Yongchang,JIANG Biwu,MA Yanfeng,et al. Study of repeated fracturing technology in low-permeable sand oil reservoir in Ansai oilfield[J].Oil Drilling & Production Technology,2005,27(5):78-80.
[2]	姜必武,黄远,周会清. 长庆低渗透油田重复压裂技术研究[J]. 钻采工艺,2009,32(3):63-64. JIANG Biwu,HUANG Yuan,ZHOU Huiqing. Study of refracturing technology in Changqing low permeability oil reservoir[J]. Drilling & Production Technology,2009, 32(3):63-64.
[3]	罗跃,张煜,杨祖国,等. 长庆低渗油藏暂堵酸化技术研究[J]. 钻井液与完井液,2008, 25(2):48-50. LUO Yue,ZHANG Yu,YANG Zuguo,et al. Temporary plugging acidizing technology for low permeability reservoirs in Changqing oilfield[J].Drilling Fluid & Completion Fluid, 2008,25(2):48-50.
[4]	吴勇,陈凤,承宁. 利用人工暂堵转向提高重复压裂效果[J]. 钻采工艺,2008,31(4):59-61. WU Yong,CHEN Feng,CHENG Ning.Enhancing re-fracturing effect with artificial temporary plugging technology[J]. Drilling & Production Technology,2008, 31(4):59-61.
[5]	陈世栋, 惠芳, 陈博, 等.胡尖山油田A17区块暂堵转向压裂技术研究[J]. 石油化工应用,2014,33(8):31-34. CHEN Shidong,HUI Fang,CHEN Bo,et al. Researching on temporary plugging and fracturing technology of A17 in Hujianshan oilfield[J].Petrochemical Industry Application,2014,33(8):31-34.
[6]	戴军华,钟水清,熊继有. 暂堵压裂技术在坪北油田的研究应用[J]. 钻采工艺,2006,29(6):67-69. DAI Junhua,ZHONG Shuiqing,XIONG Jiyou. Application of temporary diverting fracturing technology in Pingbei oilfield[J].Drilling & Production Technology, 2006,29(6):67-69.
[7]	刘洪,赵金洲,胡永全,等. 重复压裂气井造新缝机理研究[J]. 天然气工业,2004,24(12):102-104. LIU Hong,ZHAO Jinzhou,HU Yongquan,et al.Study on mechanism of inducing new fracturing for re-fracturing gas wells[J].Natural Gas Industry, 2004, 24(12):102-104.
[8]	陈忠富, 张国良, 刘鹏.大庆外围油田裂缝转向重复压裂技术[J]. 大庆石油地质与开发, 2009, 28(6):200-204. CHEN Zhongfu,ZHANG Guoliang,LIU Peng. Fracture reoriented repeated fracturing technique in Daqing peripheral oilfields[J]. Petroleum Geology & Oilfield Development in Daqing,2009,28(6):200-204.
[9]	XIAOWEI WENG,EDUARD SIEBRITS. Effect of production-induced stress field on refracture propagation and pressure response[C]. SPE 106043, 2007.
[10]	赵志强,苗海龙,李自立,等. 一种高摩阻凝胶暂堵剂的开发[J]. 钻井液与完井液,2014,31(1):50-53. ZHAO Zhiqiang,MIAO Hailong,LI Zili,et al. Development and research of high friction gelation temporary plugging agent[J]. Drilling Fluid & Completion Fluid, 2014,31(1):50-53.
[11]	付美龙,陈畅,胡泽文. 转向重复压裂高效暂堵剂性能评价[J]. 西安石油大学学报(自然科学版),2016, 31(5):43-47. FU Meilong,CHEN Chang,HU Zewen.Performance evaluation of high efficiency temporary plugging agent for steering refracturing[J].Journal of Xi'an Shiyou University (Natural Science Edition),2016,31(5):43-47.
[12]	任占春, 张光焰, 韩文峰, 等.HT-10高温屏蔽暂堵剂研制与应用[J]. 油田化学,2002,19(2):109-111. REN Zhanchun,ZHANG Guangyan,HAN Wenfeng, et al.Preparation and uses of high temperature temporarily plugging shielding fluid HT-10[J].Oilfield Chemistry, 2002,19(2):109-111.
[13]	DAVE ALLISON, SHAWN CURRY, BRAD TODD. Restimulation of wells using biodegradable particulates as temporary diverting agents[C]. CSUG/SPE 149221, 2011.
[14]	BILL GRIESER,JAMES CALVIN,JAMES DULIN. Lessons learned:refracs from 1980 to present[C]. SPE-179152-MS, 2016.
[15]	ZILLUR RAHIM, ADNAN AL-KANAAN, SAYD TAHA, et al. Innovative diversion technology ensures uniform stimulation treatments and enhances gas production:example from carbonate and sandstone reservoirs[C]. SPE-184840-MS, 2017.
[16]	FRAGACHÁN F E, SHAHRI PORDEL M, ARNOLD D M, et al. Enhancing well performance via in-stage diversion in unconventional wells:physics and case studies[C]. SPE-180985-MS, 2016.
[17]	赖南君,陈科,马宏伟,等. 水溶性压裂暂堵剂的性能评价[J]. 油田化学,2014,31(2):215-218. LAI Nanjun,CHEN Ke,MA Hongwei,et al. Performance evaluation of water soluble temporary plugging agent for fracturing[J]. Oilfield Chemistry, 2014,31(2):215-218.
[18]	严锦根,汤志强,王兆水. 新型水溶性暂堵剂JYD Ⅱ 的研制与应用[J]. 油田化学,2000,17(1):24-27. YAN Jingen,TANG Zhiqiang,WANG Zhaoshui. Water soluble temporarily plugging agent jyd-Ⅱ:preparation and uses[J]. Oilfield Chemistry,2000,17(1):24-27.
[19]	李克华,王任芳,郑延成,等. 新型水溶性暂堵剂SZD的研究与应用[J]. 石油天然气学报(江汉石油学院学报),2008,30(3):147-149. LI Kehua,WANG Renfang,ZHEN Yancheng,et al. Investigation and application of water soluble temporary plugging agent[J]. Journal of Oil and Gas Technology (J.JPI),2008,30(3):147-149.