公开(公告)号：US3508577A

公开(公告)日：1970-04-28

申请号：US3508577D

申请日：1967-04-05

Applicant: PAN AMERICAN PETROLEUM CORP

Inventor： VINCENT RENIC P ,  RANDALL BILLY V

IPC: E21B21/08 ,  E21B21/10 ,  F16K29/02

CPC classification number: E21B21/08 ,  E21B21/106 ,  Y10T137/6253 ,  Y10T137/7904

公开(公告)号：US3583500A

公开(公告)日：1971-06-08

申请号：US3583500D

申请日：1969-04-01

Applicant: PAN AMERICAN PETROLEUM CORP

Inventor： RANDALL BILLY V ,  VINCENT RENIC P

IPC: E21B21/08 ,  E21B33/06 ,  F15B11/032 ,  F15B11/072 ,  E21B21/04

CPC classification number: E21B33/06 ,  E21B21/08 ,  F15B11/032 ,  F15B11/0725 ,  F15B2211/20538 ,  F15B2211/214 ,  F15B2211/25 ,  F15B2211/30525 ,  F15B2211/50536 ,  F15B2211/50554 ,  F15B2211/5151 ,  F15B2211/528 ,  F15B2211/55 ,  F15B2211/565 ,  F15B2211/6051 ,  F15B2211/7052

Abstract: A pressure multiplying apparatus for supplying, at a regulated pressure, a control fluid in a closed system to control a device such as a hydraulically operated valve. The system is used to control either 1; automatic blowout control devices around a drilling well or 2; to use such control equipment to control the pressure on the drill string used to drill the well. Such system includes a pump for supplying the control liquid to the valve being controlled at a pressure which is a constant factor greater than the pressure of the gas used to power the pump. Valve means are provided to bleed the pressure of the control fluid proportionally to the lowering of the pressure of the power gas. This includes a differential piston exposed on one side to the pressure of the power air and on the other side to the pressure of the control fluid from the pump. The two areas of the differential piston have approximately the same ratio as the multiplying pressure factor of the pump. Means are further provided so that a constant drill pipe pressure can be maintained by using the pressure of the fluid in the drill pipe to regulate the control fluid.

公开(公告)号：US3574099A

公开(公告)日：1971-04-06

申请号：US3574099D

申请日：1967-07-06

Applicant: PAN AMERICAN PETROLEUM CORP

Inventor： RYALS JOHN N ,  ANDERSON DUANE B ,  RANDALL BILLY V

IPC: E21B21/00 ,  C10M3/04 ,  C10M1/08 ,  C10M3/14

CPC classification number: E21B21/003 ,  Y10S507/906 ,  Y10S507/91

Abstract: A MIXTURE OF ASBESTOS FIBERS AND GRANULAR PARTICLES WITHIN CRITICAL LIMITS IS USED TO STOP LOSS OF DRILLING FLUID TO DRILLED FORMATIONS.

公开(公告)号：US3120266A

公开(公告)日：1964-02-04

申请号：US3983260

申请日：1960-06-30

Applicant: PAN AMERICAN PETROLEUM CORP

Inventor： MARTIN THEODORE T ,  RANDALL BILLY V

IPC: C09K8/94

CPC classification number: C09K8/94

公开(公告)号：US3111999A

公开(公告)日：1963-11-26

申请号：US3411060

申请日：1960-06-06

Applicant: PAN AMERICAN PETROLEUM CORP

Inventor： LUMMUS JAMES L ,  RANDALL BILLY V

IPC: E21B21/16

CPC classification number: E21B21/16

公开(公告)号：US3472769A

公开(公告)日：1969-10-14

申请号：US3472769D

申请日：1967-06-19

Applicant: PAN AMERICAN PETROLEUM CORP

Inventor： LUMMUS JAMES L ,  RANDALL BILLY V

IPC: C09K8/20 ,  C09K8/24 ,  E21B21/04 ,  C10M3/22

CPC classification number: C09K8/24 ,  C09K8/206 ,  Y10S507/922 ,  Y10T137/0391

公开(公告)号：US3375888A

公开(公告)日：1968-04-02

申请号：US46211165

申请日：1965-06-07

Applicant: PAN AMERICAN PETROLEUM CORP

Inventor： LUMMUS JAMES L ,  RANDALL BILLY V

IPC: C09K8/516

CPC classification number: C09K8/516 ,  C09K2208/08

公开(公告)号：US2826547A

公开(公告)日：1958-03-11

申请号：US58557256

申请日：1956-05-17

Applicant: PAN AMERICAN PETROLEUM CORP

Inventor： FAST CLARENCE R ,  FISCHER ALFRED O ,  RANDALL BILLY V

IPC: C09K8/22

CPC classification number: C09K8/22 ,  Y10S507/903