公开(公告)号：US4729430A

公开(公告)日：1988-03-08

申请号：US923800

申请日：1986-10-27

Applicant: Kevin M. White ,  Paul D. Ringgenberg

Inventor： Kevin M. White ,  Paul D. Ringgenberg

IPC: E21B33/124 ,  E21B33/127 ,  F04B43/067 ,  F04B49/08

CPC classification number: E21B33/1246 ,  E21B33/1272 ,  F04B43/067

Abstract: A pressure limiter and pump for use in a testing string. The pressure limiter has an outer case and an inner mandrel which form an enclosure defining an annulus therebetween. The inlet and outlet check valves in the annulus define a pumping chamber therebetween which opens toward the pump. Fluid in the pumping chamber is never vented to the well annulus. In a first embodiment, a transversely mounted pressure limiter piston provides communication between the pumping chamber and a lower portion of the testing string when actuated. In the second and third embodiments, a pressure limiter piston is reciprocably disposed in the annulus between the case and mandrel; at a predetermined pressure differential, the pressure limiter piston reciprocates such that the volume in the pumping chamber is increased. A fourth embodiment simply uses a pumping chamber of predetermined volume such that the efficiency of the pump drops to essentially zero when the pressure in the pumping chamber reaches a predetermined level; no pressure limiter piston is used.

Abstract translation: 用于测试串的压力限制器和泵。 压力限制器具有外壳和内心轴，其形成在其间限定环形空间的外壳。 环形空间中的入口和出口止回阀在其间限定了朝向泵开口的泵送室。 泵送室中的流体不会泄漏到井环。 在第一实施例中，横向安装的压力限制器活塞在致动时提供泵送室和测试串的下部之间的连通。 在第二和第三实施例中，压力限制器活塞可往复地设置在壳体和心轴之间的环空中; 在预定的压差下，限压器活塞往复运动，使得泵送室中的体积增加。 第四实施例简单地使用预定体积的泵送室，使得当泵送室中的压力达到预定水平时，泵的效率基本上为零; 没有使用压力限制器活塞。

公开(公告)号：US4706746A

公开(公告)日：1987-11-17

申请号：US924250

申请日：1986-10-27

Applicant: Kevin M. White ,  Harold K. Beck

Inventor： Kevin M. White ,  Harold K. Beck

IPC: E21B33/124 ,  F04B43/067 ,  E21B43/12

CPC classification number: E21B33/1246 ,  F04B43/067

Abstract: A downhole inflatable packer pump for use in a testing string. The pump includes an upper mandrel rotatably disposed in a case. The upper mandrel includes a pump cam with a cam slot thereon. A piston cavity is defined between the case and inner mandrel in which a single, sleeve-type piston is reciprocably disposed. A cam roller on the piston engages the cam slot, and as the inner mandrel rotates, the piston is reciprocated. A diaphragm sealingly separates the piston chamber from a pumping chamber. Inlet and outlet check valves with annular resilient lips allow fluid flow into the pumping chamber from the well annulus and out of the pumping chamber into an outlet chamber in communication with the lower portion of the testing string. The piston chamber is filled with a lubricating oil, and pumping action of the reciprocating pump piston causes movement of the oil which is transmitted to the pumping chamber through the diaphragm. An equalizing chamber allows equilization of hydrostatic pressures between the piston chamber and the well annulus. A pressure limited is included for limiting a pressure differential between the pumping chamber and the well annulus to a predetermined level. Fluid from the pumping chamber is not directly bypassed to the well annulus.

Abstract translation: 用于测试绳的井下充气封隔器泵。 泵包括可旋转地设置在壳体中的上心轴。 上心轴包括在其上具有凸轮槽的泵凸轮。 在壳体和内心轴之间限定有活塞腔，其中单个套筒式活塞可往复地布置。 活塞上的凸轮滚子接合凸轮槽，并且当内心轴旋转时，活塞往复运动。 隔膜将活塞室与泵送室密封地分开。 具有环形弹性唇缘的入口和出口止回阀允许流体从井环流出到泵送室中并且从泵送室流出到与测试串的下部连通的出口室。 活塞室填充有润滑油，并且往复泵活塞的泵送作用引起通过隔膜传递到泵送室的油的运动。 均衡室允许在活塞室和井环之间的流体静压力相等。 包括压力限制，用于将泵送室和井环之间的压差限制到预定水平。 来自泵送室的流体不直接绕过井环。

公开(公告)号：US4856585A

公开(公告)日：1989-08-15

申请号：US209116

申请日：1988-06-16

Applicant: Kevin M. White ,  Harold K. Beck

Inventor： Kevin M. White ,  Harold K. Beck

IPC: E21B34/10 ,  E21B49/08

CPC classification number: E21B34/108 ,  E21B49/081

Abstract: A sampler apparatus for use in a well includes a housing having a full opening bore therethrough. A first removable sample chamber for trapping a well fluid sample is removably disposed in the housing in a location such as to avoid restricting the full opening bore regardless of whether the sample chamber is in an open or closed position. Preferably a plurality of such sample chambers are provided.