公开(公告)号：US20120175118A1

公开(公告)日：2012-07-12

申请号：US13273236

申请日：2011-10-14

Applicant: Deepak Khatri ,  Mitch Rice ,  Nikole Strickler ,  Robert Williams

Inventor： Deepak Khatri ,  Mitch Rice ,  Nikole Strickler ,  Robert Williams

IPC: E21B33/13 ,  B05D7/00 ,  B05D7/14 ,  C09K8/467

CPC classification number: C04B28/02 ,  C09K8/426 ,  C09K8/428 ,  C09K8/473 ,  C04B20/008 ,  C04B20/1033 ,  C04B24/129 ,  C04B38/02 ,  C04B40/0633 ,  C04B20/1048 ,  C04B22/04

Abstract: Expansive cements for use in cementing subterranean wells contain an encapsulated gas-generating substance. The gas-generating substance comprises one or more materials that release hydrogen, nitrogen or both. The gas-generating substance is encapsulated by a coating comprising a polymer. The coating prevents premature gas release at the surface during slurry mixing, and promotes gas release at a desired location in the subterranean well. The released gas may also control the internal pore pressure of the cement slurry, thereby inhibiting the invasion of formation fluids into the borehole.

Abstract translation: 用于固井地下井的膨胀水泥含有封装的气体产生物质。 气体发生物质包括一种或多种释放氢气，氮气或两者的材料。 气体发生物质由包含聚合物的涂层包封。 涂层防止在浆料混合期间在表面过早释放气体，并且促进在地下井中所需位置处的气体释放。 释放的气体也可以控制水泥浆的内部孔隙压力，从而抑制地层流体侵入井眼。

公开(公告)号：US09139476B2

公开(公告)日：2015-09-22

申请号：US12938429

申请日：2010-11-03

Applicant: Deepak Khatri ,  Cecilia Nguyen ,  Syed Ali

Inventor： Deepak Khatri ,  Cecilia Nguyen ,  Syed Ali

IPC: C09K8/467 ,  C04B28/04 ,  C04B24/14 ,  C09K8/46 ,  C04B103/20

CPC classification number: C04B28/04 ,  C04B24/14 ,  C04B2103/20 ,  C09K8/46 ,  C09K8/467

Abstract: Cement retarders for well cements are based on hydrophobins. Hydrophobins are proteins or polypeptides that form hydrophobic coatings on surfaces. The size of the hydrophobins is preferably between about 100 and 350 amino acids, and the preferred hydrophobin concentration is between about 0.001% and 1.0% by weight of cement. Portland cement is the preferred well cement. Cement slurries containing hydrophobins are useful for both primary and remedial cementing applications.

Abstract translation: 用于水泥的水泥缓凝剂基于疏水蛋白。 疏水蛋白是在表面形成疏水性涂层的蛋白质或多肽。 疏水蛋白的大小优选为约100至350个氨基酸，并且优选的疏水蛋白浓度为约0.001重量％至1.0重量％的水泥。 波特兰水泥是优选的水泥。 含有疏水蛋白的水泥浆料可用于初级和补充固井应用。

公开(公告)号：US08689871B2

公开(公告)日：2014-04-08

申请号：US13273236

申请日：2011-10-14

Applicant: Deepak Khatri ,  Mitch Rice ,  Nikole Strickler ,  Robert Williams

Inventor： Deepak Khatri ,  Mitch Rice ,  Nikole Strickler ,  Robert Williams

IPC: E21B33/13 ,  E21B43/295

CPC classification number: C04B28/02 ,  C09K8/426 ,  C09K8/428 ,  C09K8/473 ,  C04B20/008 ,  C04B20/1033 ,  C04B24/129 ,  C04B38/02 ,  C04B40/0633 ,  C04B20/1048 ,  C04B22/04

Abstract: Expansive cements for use in cementing subterranean wells contain an encapsulated gas-generating substance. The gas-generating substance comprises one or more materials that release hydrogen, nitrogen or both. The gas-generating substance is encapsulated by a coating comprising a polymer. The coating prevents premature gas release at the surface during slurry mixing, and promotes gas release at a desired location in the subterranean well. The released gas may also control the internal pore pressure of the cement slurry, thereby inhibiting the invasion of formation fluids into the borehole.

Abstract translation: 用于固井地下井的膨胀水泥含有封装的气体产生物质。 气体发生物质包括一种或多种释放氢气，氮气或两者的材料。 气体发生物质由包含聚合物的涂层包封。 涂层防止在浆料混合期间在表面过早释放气体，并且促进在地下井中所需位置处的气体释放。 释放的气体也可以控制水泥浆的内部孔隙压力，从而抑制地层流体侵入井眼。

公开(公告)号：US20120103609A1

公开(公告)日：2012-05-03

申请号：US12938429

申请日：2010-11-03

Applicant: Deepak Khatri ,  Cecilia Nguyen ,  Syed Ali

Inventor： Deepak Khatri ,  Cecilia Nguyen ,  Syed Ali

IPC: E21B33/05 ,  C04B24/14

CPC classification number: C04B28/04 ,  C04B24/14 ,  C04B2103/20 ,  C09K8/46 ,  C09K8/467

Abstract: Cement retarders for well cements are based on hydrophobins. Hydrophobins are proteins or polypeptides that form hydrophobic coatings on surfaces. The size of the hydrophobins is preferably between about 100 and 350 amino acids, and the preferred hydrophobin concentration is between about 0.001% and 1.0% by weight of cement. Portland cement is the preferred well cement. Cement slurries containing hydrophobins are useful for both primary and remedial cementing applications.

Abstract translation: 用于水泥的水泥缓凝剂基于疏水蛋白。 疏水蛋白是在表面形成疏水性涂层的蛋白质或多肽。 疏水蛋白的大小优选为约100至350个氨基酸，并且优选的疏水蛋白浓度为约0.001重量％至1.0重量％的水泥。 波特兰水泥是优选的水泥。 含有疏水蛋白的水泥浆料可用于初级和补充固井应用。