Title:
GAS OPERATED PUMP FOR USE IN A WELLBORE
Document Type and Number:
WIPO Patent Application WO2002031311
Kind Code:
A3
Abstract:
The present invention generally provides a gas operated pump (30) having a removable and insertable valve (300, 500, 700). In one aspect, the invention includes a pump housing having a fluid path (325) for pressurized gas and a second fluid path (420) for vent or exhaust gas. The fluid paths are completed when the valve is inserted into a longitudinal bore formed in the housing.
Inventors:
AMANI MOHAMMAD (US)
Application Number:
PCT/GB2001/004535
Publication Date:
July 04, 2002
Filing Date:
October 11, 2001
Export Citation:
Assignee:
WEATHERFORD LAMB (US)
HARDING RICHARD PATRICK (GB)
AMANI MOHAMMAD (US)
HARDING RICHARD PATRICK (GB)
AMANI MOHAMMAD (US)
International Classes:
E21B34/06; E21B34/10; E21B43/12; F04B47/08; F04F1/08; (IPC1-7): E21B43/12; E21B34/06; E21B34/10; F04B47/08
Foreign References:
| US2336683A | 1943-12-14 | |||
| US5806598A | 1998-09-15 | |||
| US5325917A | 1994-07-05 | |||
| US6068015A | 2000-05-30 | |||
| US3873238A | 1975-03-25 | |||
| US3833060A | 1974-09-03 |
Download PDF:
Previous Patent: APPARATUS AND METHOD FOR CONTROLLING A FLUID FLOW IN A WELLBORE
Next Patent: DRILL STRING MEMBER
Next Patent: DRILL STRING MEMBER