发明申请
WO2017095961A1 SYSTEMS AND METHODS FOR CONTROLLING FLOW RATE IN A FOCUSED DOWNHOLE ACQUISITION TOOL
审中-公开
基本信息:
- 专利标题： SYSTEMS AND METHODS FOR CONTROLLING FLOW RATE IN A FOCUSED DOWNHOLE ACQUISITION TOOL
- 专利标题（中）：用于在聚焦井下采集工具中控制流速的系统和方法
- 申请号：PCT/US2016/064276 申请日：2016-11-30
- 公开(公告)号：WO2017095961A1 公开(公告)日：2017-06-08
- 发明人： GISOLF, Adriaan , HSU, Kai , CHANG, Yong , ZUO, Youxiang , LEE, Ryan Sangjun , PARTOUCHE, Ashers
- 申请人： SCHLUMBERGER TECHNOLOGY CORPORATION , SCHLUMBERGER CANADA LIMITED , SERVICES PETROLIERS SCHLUMBERGER , SCHLUMBERGER TECHNOLOGY B.V.
- 申请人地址： 300 Schlumberger Drive Sugar Land, Texas 77478 US
- 专利权人： SCHLUMBERGER TECHNOLOGY CORPORATION,SCHLUMBERGER CANADA LIMITED,SERVICES PETROLIERS SCHLUMBERGER,SCHLUMBERGER TECHNOLOGY B.V.
- 当前专利权人： SCHLUMBERGER TECHNOLOGY CORPORATION,SCHLUMBERGER CANADA LIMITED,SERVICES PETROLIERS SCHLUMBERGER,SCHLUMBERGER TECHNOLOGY B.V.
- 当前专利权人地址： 300 Schlumberger Drive Sugar Land, Texas 77478 US
- 代理机构： KINCAID, Kenneth L. et al.
- 优先权： US14/956,338 20151201
- 主分类号： E21B49/08
- IPC分类号： E21B49/08 ; E21B49/10
摘要：
A method includes operating a downhole acquisition tool including a guard probe and a sample probe in a wellbore that contains a fluid that includes a native reservoir fluid and a contaminant. The method also includes receiving a first portion of fluid into the guard probe and a second portion of fluid into the sample probe, estimating a contamination level of the first or second portions based on a fluid property of the respective first and second portions, determining an initial guard flow rate of the first portion, determining an initial sample flow rate of the second portion, using a processor to adjust a guard flow rate of the second portion over pump time after the contamination level of the first portion is at or below a contamination level threshold, and adjust a sample flow rate of the first portion based on the adjusted guard flow rate and total flowrate.
摘要（中）：
一种方法包括在井眼中操作井下采集工具，该井下采集工具包括防护探针和样本探针，该井眼包含含有天然储层流体和污染物的流体。 该方法还包括接收进入防护探头的第一部分流体和进入样品探头的第二部分流体，基于相应的第一和第二部分的流体性质估计第一或第二部分的污染水平，确定 使用处理器在第一部分的污染水平等于或低于污染物之后的泵时间内调节第二部分的防护流量，从而确定第一部分的初始防护流动速率，确定第二部分的初始样本流动速率 并根据调整后的保护流量和总流量调整第一部分的采样流量。
IPC结构图谱:
| E | 固定建筑物 |
| --E21 | 土层或岩石的钻进；采矿 |
| ----E21B | 土层或岩石的钻进；从井中开采油、气、水、可溶解或可熔化物质或矿物泥浆 |
| ------E21B49/00 | 测试井壁的性质；地层测试；专用于地表钻进或钻井以便取得表土或井中液体试样的方法或设备 |
| --------E21B49/08 | .在钻孔或井中取流体试样或测试液体 |