迪那2气田井筒高温解堵液体系

杨淑珍; 姚二冬; 陈庆; 周福建; 景宏涛; 张航艳; 王珊

doi:10.3969/j.issn.1001-5620.2018.01.024

迪那2气田井筒高温解堵液体系

doi: 10.3969/j.issn.1001-5620.2018.01.024

1. 塔里木油田公司, 新疆库尔勒 841000;
2. 中国石油大学(北京)非常规天然气研究院, 北京 102249

基金项目:

中国石油科技创新基金资助（2016D-5007-0205）；中国石油大学（北京）科研基金资助（2462015YJRC027）。

详细信息

作者简介:
杨淑珍,1968年生,高级工程师,毕业于原西南石油学院采油工程专业。电话15201470447;E-mail:yangsz-tlm@petrochina.com.cn。

中图分类号: TE257.6
计量
- 文章访问数: 495
- HTML全文浏览量: 136
- PDF下载量: 195
- 被引次数: 0
出版历程
- 收稿日期: 2017-09-01
- 刊出日期: 2018-01-30

Study on High Temperature Block Removing Fluids Used on Dina-2 Ges Field

1. Gas Production Research Center of PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000;
2. The Unconventional Natural Gas Institute of China University of Petroleum, Beijing 102249

摘要

摘要: 迪那2高压气田部分井存在出砂严重、生产管柱堵塞等问题，严重影响了气井安全、稳定生产，针对这一问题研制了一种耐高温螯合型高效解堵剂。首先，根据迪那气田的岩性特征，通过络合滴定试验优选了对钙、铝、铁金属离子螯合能力强的有机磷酸螯合剂，然后将该螯合剂与氢氟酸及有机弱酸相互组合，形成了多种解堵液基础配方体系。通过岩粉溶蚀和腐蚀实验，评价了一系列体系的溶解率、耐温及缓蚀能力，并由此确定了2种性能较好的解堵液体系，同时使用现场井筒堵塞物样品对其进行了溶解验证实验。结果表明，该体系能够耐受160℃的高温，随着时间的延长，溶蚀率不断增加，最高可达到75%。与土酸相比，新型解堵剂水溶液不仅酸度较低，腐蚀作用较弱，具有良好的溶解能力，还能够有效防止二次沉淀。对现场堵塞物溶解前后的矿物成分和溶液进行测试表明，该解堵液能够快速地溶解大部分的堵塞物，缓慢地溶解石英、长石等矿物，钙、镁、铝和硅等金属离子均能被有效溶解到溶液中，是性能优越的高温解堵液体系。
- 高温 /
- 砂岩 /
- 解堵液 /
- 高压气井 /
- 迪那2气田
Abstract: Severe sand production and blocking of production string have been encountered in Dina-2 Gas field, seriously affecting the safe and steady production of the well. An efficient high temperature chelating block removing agent has been developed to deal with the problems above mentioned. Based on the study on the characteristics of the rocks found in the Dina gas field, a high temperature organophosphorus acid chelant that can efficiently chelate calcium, aluminum and iron ions was selected through complexometric titration. The chelant was then mixed with hydrofluoric acid and weak organic acids in different ratios to form many base block removing fluids. The blocking removing fluids were then tested through dissolution and corrosion of rock powders for their dissolving rate, high temperature resistance and corrosion inhibitive capacity. Two formulations with better performance were chosen through the tests. The dissolving ability of the two block removing fluids was verified by reacting them with the blockage found in a well. It was found that the block removing fluids were able to function properly at 160℃. The dissolving rate of the block removing fluids was increasing with time, with a maximum of 75%. Compared with mud acid, the new block removing fluids have these advantages such as low acidity, weak corrosiveness, high dissolving capacity, and ability to effectively prevent secondary sedimentation. Analyses of the mineral components and solution of the blockage reacted with the block removing fluids have shown that the block removing fluid are able to quickly dissolve most of the blockage and slowly dissolve quartz and feldspar etc., and metallic ions such as calcium, magnesium, aluminum and iron ions can be effectively dissolved into the solutions, demonstrating the block removing fluids of their superior high temperature performance.
- High temperature /
- Sandstone /
- Block removing fluid /
- High pressure gas well /
- Dina-2 Ges Field

HTML全文

参考文献(11)

[1]	张宝, 钟凡, 马亚琴, 等. 迪那2超高压气田完井工艺技术研究[J]. 油气井测试,2011,20(2):41-43 , 77. ZHANG Bao,ZHONG Fan,MA Yaqin,et al.Study on completion technology of super high pressure gas field of Dina 2well[J].Well Testing,2011,20(2):41-43,77.
[2]	李卓, 姜振学, 庞雄奇, 等. 塔里木盆地库车坳陷致密砂岩气藏成因类型[J]. 地球科学,2013,38(1):156-164. LI Zhuo,JIANG Zhenxue,PANG Xiongqi,et al. Genetic types of the tight sandstone gas reservoirs in the kupa depression,tarim basin,NW China[J].Petroleum Geology and Engineering,2013,38(1):156-164.
[3]	张慎. 压裂砂堵问题分析及对策研究[J]. 化工管理, 2016,17(1):56-58. ZHANG Shen.Chemical enterprise management business school for chemical enterpreneur[J].Chemical Enterprise Management,2016,17(1):56-58.
[4]	雷霆,李辉. 多氢酸技术在沈阳油田的应用[J]. 石油地质与工程,2011,S1:67-69. LEI Ting,LI Hui.Application of multi-hydrogen acidizing blocking removal technology in Shenyang oilfield[J].Petroleum Geology and Engineering,2011 , S1:67-69.
[5]	于雯泉,陈勇,杨立干,等. 酸性环境致密砂岩储层石英的溶蚀作用[J]. 石油学报,2014,2(1):286-293. YU Wenquan,CHEN Yong,YANG Ligan,et al. Dissolution of quartz in tight sandstone reservoirs in an acidic environment[J].Acta Petrolei Sinica,2014,2(1):286-293.
[6]	牛瑞霞, 龙彪, 李柏林, 等. 螯合型表面活性剂NaLED3A的合成及性能[J]. 精细石油化工,2011,28(1):45-49. Niu Ruixia,Long Biao,Li Bolin,et al.Synthesis and properties of chelating surfactant sodium N-Dodecylened iaminetriacetate[J].Speciality Petrochemicals,2011,28(1):45-49.
[7]	洪焱根,王魁,冯彬,等. 螯合剂铁螯合值测定方法简介及评价[J]. 印染助剂,2010,10(12):53-56. Hong Yangen,Wang Kui,Feng Bin,et al.Introduction and assessment on measurement methods of Fe(Ⅲ) chelation value of chelating agent[J].Textile Auxiliaries, 2010,10(12):53-56.
[8]	柳春林,王锐,王伟. 砂岩油藏酸化预处理技术研究与应用[J]. 钻采工艺,2011,34(5):96-98. LIU Chunlin,WANG Rui,WANG Wei.Study and application of pre-acidification in sandstone reservoir[J]. Drilling & Production Technology,2011,34(5):96-98.
[9]	何文祥, 杨亿前, 马超亚, 等. 特低渗透砂岩储层伤害的实验研究[J]. 特种油气藏,2011,18(2):96-98. He Wenxiang,Yang Yiqian,Ma Chaoya,et al. Experimental study of formation damage in ultra-low permeability sandstone reservoirs[J].Special Oil & Gas Reservoirs,2011,18(2):96-98.
[10]	SY 5886-2012砂岩缓速酸性能评价方法[S]. SY 5886-2012 Retarded acid sandstone evaluation method[S].
[11]	SY/T 5405-1996酸化用缓蚀剂性能的试验方法及评价指标[S]. SY/T 5405-1996 Test methods and indexes for acidification inhibitor performance[S].