筛管完井水平井梯度智能控堵水试验研究
Experimental Studies on Stepwise and Intelligent WSO for Screen Completed Horizontal Well
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- 引用格式:
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孟祥海,朱立国,张云宝,高建崇,代磊阳,高立宁,邹明华.筛管完井水平井梯度智能控堵水试验研究[J].天然气与石油,2019,37(4):0.doi:
Meng Xianghai, Zhu Liguo , Zhang Yunbao , Gao Jianchong , Dai Leiyang, Zou Minghua.Experimental Studies on Stepwise and Intelligent WSO for Screen Completed Horizontal Well[J].Natural Gas and Oil,2019,37(4):0.doi:
- DOI:
- 作者:
- 孟祥海1 朱立国2 张云宝1 高建崇1 代磊阳1 高立宁3 邹明华2
Meng Xianghai1, Zhu Liguo2 , Zhang Yunbao1 , Gao Jianchong1 , Dai Leiyang1, Zou Minghua2
- 作者单位:
- 1. 中海石油(中国)有限公司天津分公司, 2. 中海油能源发展股份有限公司工程技术分公司,3. 中国石油集团渤海钻探工程有限公司
1. Tianjin Branch of CNOOC Ltd, Tianjin, 300452, China; 2. CNOOC EnerTech-Drilling & Production Company
- 关键词:
- 水平井;筛管完井;电控阀;筛管外环空化学封隔器;凝胶堵剂;梯度智能控堵水
Horizontal well; Screen completion; Electronically controlled valves; Annulus chemical packer; Gel plugging agent; Stepwise and intelligent WSO
- 摘要:
海上油田水平井多数采用筛管完井防砂,筛管与井壁之间存在轴向窜流,为解决水平井找水、分段控堵水难题,通过室内水平井控堵水模拟装置,开展基于电控阀控水管柱的梯度智能控堵水试验研究,分别测定筛管外环空化学封隔器(ACP)封隔强度、凝胶堵剂封堵率。结果表明:ACP每米环空抗压强度p＞2 MPa,凝胶堵剂封堵率f为95.79%,封堵后,高、低渗透层出现“剖面反转现象”,使原来产液少的低渗透管分流量Q由封堵前的9%上升至80%,超过了高渗透管的产出,低渗透管得到了较好动用,说明梯度智能控堵水技术具有较好堵水效果。
In order to solve the practical problem that it is difficult to find water and control water of most screen completed horizontal wells in offshore oilfield due to across flow between screen tube and reservoir, annulus chemical packer（ACP）and plugging agent are researched to form the technology of stepwise and intelligent WSO based on the technology of electronically controlled valves for water control.Experimental studies show that the pressure of ACP is more than 2 MPa/m in the external annular pressure simulation device of original size screen tube,the gel plugging rate reached 95.79 % in high permeable tube by location injection of electronically controlled valves.The phenomenon of "profile inversion" appears in high and low permeability tube after plugging, which makes the diversion volume of low permeability tube with low fluid production increase from 9 % to 80 %, surpassing the production of high permeability tube.This indicates that low permeability tube has been well utilizedand the stepwise and intelligent WSO has a good WSO effect.
