发明名称 |
FLUID COMPOSITION COMPRISING CROSSLINKED POLYVINYLPYRROLIDONE FOR OIL FIELD APPLICATIONS |
摘要 |
Disclosed herein is a water based High-Temperature High-Pressure (HTHP) fluid composition having a density of about 8.3 to about 21.0 ppg, comprising: (i) a brine based fluid; (ii) about 0.5 ppb to about 20 ppb of crosslinked polyvinylpyrrolidone (PVP); (iii) about 5 ppb to about 100 ppb of bridging agents selected from the group consisting of CaCO3 and sized salts; and (iv) optionally about 0 ppb to about 25 ppb of Fluids Loss Additives (FLA), wherein the crosslinked PVP is prepared by precipitation polymerization of vinylpyrrolidone (VP) in an organic solvent in the presence of a crosslinking agent and a free radical polymerization initiator, wherein the crosslinking agent is present in an amount of from about 0.1 wt. % to about 5.0 wt. % based on the weight of the vinylpyrrolidone. Also discloses a method of drilling and completing operations in a subterranean formation. |
申请公布号 |
WO2015034601(A1) |
申请公布日期 |
2015.03.12 |
申请号 |
WO2014US48913 |
申请日期 |
2014.07.30 |
申请人 |
ISP INVESTMENTS INC. |
发明人 |
WANG, JANICE, JIANZHAO;MELBOUCI, MOHAND;LEI, CUIYUE;MUSA, OSAMA, M. |
分类号 |
C09K8/00;C09K8/02 |
主分类号 |
C09K8/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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