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1. 发明授权

EP0004692B1 Method for forming channels of high fluid conductivity in formation parts around a borehole 失效
标题翻译：在孔洞形成部分形成高流体电导率通道的方法
公开(公告)号：EP0004692B1
公开(公告)日：1982-03-31
申请号：EP79200157.0
申请日：1979-04-02
申请人： SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人： Haafkens, Rudolf , Fernandez Luque, Rafael , De Vries, Willem
IPC分类号： E21B43/25 , E21B43/26 , E21B43/27
CPC分类号： C09K8/62 , C09K8/72 , E21B43/26 , E21B43/267

2. 发明公开

EP0004692A2 Method for forming channels of high fluid conductivity in formation parts around a borehole 失效
标题翻译：一种用于制造在位于周围井孔部件形成更高流体电导率通道方法。
公开(公告)号：EP0004692A2
公开(公告)日：1979-10-17
申请号：EP79200157.0
申请日：1979-04-02
申请人： SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人： Haafkens, Rudolf , Fernandez Luque, Rafael , De Vries, Willem
IPC分类号： E21B43/25 , E21B43/26 , E21B43/27
CPC分类号： C09K8/62 , C09K8/72 , E21B43/26 , E21B43/267
摘要： A method for forming channel of high fluid conductivity in relatively soft acid-soluble formation parts around a bore-hole penetrating such formation. said method comprising the sequential steps of:

1) installing a casing in the well, and introducing in the wall of the casing a plurality of perforations arranged over at least part of the said wall where facing the formation;
2) inducing in the formation a fracture communicating with the perforations and containing a viscous fluid:
3) injecting an acid solution through the perforations into the fracture at a pressure at which the fracture remains open, the viscosity ratio between the viscous fluid and the acid solution being chosen such that the viscous fluid is displaced in the fracture in an unstable manner by the acid solution;
4) continuing the injection of the acid solution through the perforations until channels have been etched in areas of the fracture walls that face each other;
5) injecting a viscous carrying fluid carrying a propping agent through the perforations into the fracture at a pressure at which the fracture remains open, the viscosity of the carrying fluid being at least equal to the viscosity of the acid solution;
6) continuing the injection of the carrying fluid and the propping agent until propping agent is present in the fracture between at least part of those areas of the fracture walls wherein channels have been etched;
7) lowering the fluid pressure in the fracture, thereby allowing the fracture walls to be displaced to closing position, in which position the walls of the channels are supported by propping agent; and
8) lowering the viscosity of the viscous fluids.
摘要翻译：一种用于增加在软酸可溶生产地层完成井的生产率，包括以下步骤的方法：在寻求地层裂缝含有的粘性流体生产; 注入酸溶液worin容纳的流体的粘度优选比酸性溶液大至少50倍到地层中以创建酸蚀指法通道; 注入到地层中与支撑剂的所有的粘度，其至少等于直到支撑剂在至少在那些信道已被蚀刻区域中的骨折沉积在酸溶液的流体; 和降低骨折内的压力，以允许其向关闭位置移动。通过控制粘性流体的粘度比以酸溶液和运载流体到酸溶液中长指法酸蚀刻通道被创建并扶起检查并当在裂缝中的流体压力被减小的软地层的通道壁被撑开。

3. 发明公开

EP0004692A3 Method for forming channels of high fluid conductivity in formation parts around a borehole 失效
标题翻译：在孔洞形成部分形成高流体电导率通道的方法
公开(公告)号：EP0004692A3
公开(公告)日：1979-11-28
申请号：EP79200157
申请日：1979-04-02
申请人： SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人： Haafkens, Rudolf , Fernandez Luque, Rafael , De Vries, Willem
IPC分类号： E21B43/25 , E21B43/26 , E21B43/27
CPC分类号： C09K8/62 , C09K8/72 , E21B43/26 , E21B43/267
摘要： A method for forming channel of high fluid conductivity in relatively soft acid-soluble formation parts around a bore-hole penetrating such formation. said method comprising the sequential steps of:
1) installing a casing in the well, and introducing in the wall of the casing a plurality of perforations arranged over at least part of the said wall where facing the formation; 2) inducing in the formation a fracture communicating with the perforations and containing a viscous fluid: 3) injecting an acid solution through the perforations into the fracture at a pressure at which the fracture remains open, the viscosity ratio between the viscous fluid and the acid solution being chosen such that the viscous fluid is displaced in the fracture in an unstable manner by the acid solution; 4) continuing the injection of the acid solution through the perforations until channels have been etched in areas of the fracture walls that face each other; 5) injecting a viscous carrying fluid carrying a propping agent through the perforations into the fracture at a pressure at which the fracture remains open, the viscosity of the carrying fluid being at least equal to the viscosity of the acid solution; 6) continuing the injection of the carrying fluid and the propping agent until propping agent is present in the fracture between at least part of those areas of the fracture walls wherein channels have been etched; 7) lowering the fluid pressure in the fracture, thereby allowing the fracture walls to be displaced to closing position, in which position the walls of the channels are supported by propping agent; and 8) lowering the viscosity of the viscous fluids.
摘要翻译：一种用于提高在软酸可溶性生产地层中完成的井的生产率的方法，包括以下步骤：在这种地层中生产含有粘性流体的裂缝; 注入一种酸溶液，其中所含流体的粘度优选地比酸溶液高达地层的50倍以产生酸腐蚀的指法通道; 将具有至少等于酸溶液的至少等于酸溶液的支撑剂注入地层的流体，直到支撑剂至少在已经蚀刻通道的那些区域中沉积在断裂中; 并降低骨折内的压力，使其能够向闭合位置移动。通过控制粘性流体与酸性溶液的粘度比和将流体输送到酸性溶液中，长时间的指法产生并支撑酸蚀刻通道，使得当断层中的流体压力降低时，柔性地层的通道壁被支撑开。

4. 发明公开

EP0005571A1 Method for forming channels of high fluid conductivity in formation parts around a borehole 失效
标题翻译：一种用于制造在位于周围井孔部件形成更高流体电导率通道方法。
公开(公告)号：EP0005571A1
公开(公告)日：1979-11-28
申请号：EP79200229.7
申请日：1979-05-10
申请人： SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人： Haafkens, Rudolf , Fernandez Luque, Rafael , De Vries, Willem
IPC分类号： E21B43/25 , E21B43/26 , E21B43/27
CPC分类号： C09K8/62 , C09K8/72 , E21B43/26
摘要： Amethod for forming channels of high fluid conductivity in relatively hard acid-soluble formation parts around a borehole, said method comprising the sequential steps of:

1) installing a casing in the well, and introducing in the wall of the casing a plurality of perforations arranged over at least part of said well where facing the formation;
2) inducing in the formation a fracture containing a viscous fluid with propping agent at a fluid pressure at which the fracture is kept open;
3) injecting an aqueous acid solution through the perforations into the fracture at a pressure at which the fracture remains open, the viscosity ratio between the viscous fluid and the acid solution being chosen such that the viscous fluid is displaced in the fracture in an unstable manner by the acid solution;
4) continuing the injection of the acid solution through the perforations until channels have been etched in areas of the fracture walls that face each other;
5) lowering the fluid pressure in the fracture, thereby allowing the fracture walls to be displaced towards each other; and
6) lowering the viscosity of the viscous fluid.
摘要翻译： ... 1）在井中安装的壳体，并且在壳体中的多个壁中引入：一种用于在绕钻孔相对硬的可溶于酸的形成部分形成高流体电导率的信道，所述方法包括以下的顺序步骤方法穿孔布置在所述的至少一部分以及其中面向形成; ... 2）在地层中诱导裂缝含有的粘性流体与在哪一个裂缝保持打开流体压力支撑剂; ... 3）在wässrige酸溶液注入通过在在哪个裂缝保持打开的压力中的穿孔进入裂缝，被选择检查没有粘性流体在裂缝中通过酸溶液位移上不稳定的方式中的粘性流体和酸溶液之间的粘度比; ... 4 ）继续通过穿孔的酸溶液的注入，直到信道已在裂缝壁并面对海誓山盟区域被蚀刻; ... 5）降低流体产品p ressure在裂缝中，从而允许裂缝壁朝向彼此位移; 和... 6）降低的粘性流体的粘度。

5. 发明授权

EP0005571B1 Method for forming channels of high fluid conductivity in formation parts around a borehole 失效
标题翻译：形成钻孔中形成部件的高流体电导率通道的方法
公开(公告)号：EP0005571B1
公开(公告)日：1981-12-30
申请号：EP79200229.7
申请日：1979-05-10
申请人： SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人： Haafkens, Rudolf , Fernandez Luque, Rafael , De Vries, Willem
IPC分类号： E21B43/25 , E21B43/26 , E21B43/27
CPC分类号： C09K8/62 , C09K8/72 , E21B43/26

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