发明名称 |
AMMONIUM HALIDE AS GELATION RETARDER FOR CROSSLINKABLE POLYMER COMPOSITIONS |
摘要 |
<p>According to one embodiment, a treatment fluid for a well includes: (a) a water- soluble polymer, wherein the water-soluble polymer comprises a polymer of at least one non- acidic ethylenically unsaturated polar monomer; (b) an organic crosslinker capable of crosslinking the water-soluble polymer; (c) an ammonium halide; and (d) water. According to another embodiment, a method for blocking the permeability of a portion of a subterranean formation penetrated by a wellbore is provided, the method including the steps of: (a) selecting the portion of the subterranean formation to be treated, wherein the bottomhole temperature of the portion of the subterranean formation is equal to or greater than 250 °F (121 °C); (b) selecting estimated treatment conditions, wherein the estimated treatment conditions comprise temperature over a treatment time; (c) forming a treatment fluid that is a crosslinkable polymer composition comprising: (i) a water-soluble polymer, wherein the water-soluble polymer comprises a polymer of at least one non-acidic ethylenically unsaturated polar monomer; (ii) an organic crosslinker capable of crosslinking the water- soluble polymer; (iii) an ammonium halide; and (iv) water; (d) selecting the water-soluble polymer, the crosslinker, the ammonium halide, and the water, and the proportions thereof, such that the gelation time of the treatment fluid is at least 2 hours when tested under the estimated treatment conditions; and (e) injecting the treatment fluid through the wellbore into the portion of the subterranean formation.</p> |
申请公布号 |
WO2011107744(A1) |
申请公布日期 |
2011.09.09 |
申请号 |
WO2011GB00297 |
申请日期 |
2011.03.03 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC;SIERRA, LEOPOLDO;AL-MUNTASHERI, GHAITHAN, A.;BAKHTIRAYOV, ALBERT;TURNER, CRAIG, ROBERT;SAUDI ARABIAN OIL COMPANY |
发明人 |
SIERRA, LEOPOLDO;AL-MUNTASHERI, GHAITHAN, A.;BAKHTIRAYOV, ALBERT |
分类号 |
C09K8/508;C09K8/512;C09K8/88 |
主分类号 |
C09K8/508 |
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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