Single pump focused sampling
First Claim
Patent Images
1. An apparatus comprising:
- first and second intakes to receive formation fluid from a subterranean formation penetrated by a borehole;
a pump to draw formation fluid into the first and second intakes and discharge into the borehole at least a portion of the formation fluid drawn into the second intake;
a sample chamber in selective fluid communication with the first intake;
a first flow line in fluid communication with the first intake and with the sample chamber; and
a second flow line in fluid communication with a back side of the sample chamber and with the pump.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus comprising first and second fluid intakes, a pump, and a sample chamber, may be positioned in a borehole penetrating a subterranean formation. A method of use thereof may comprise drawing fluid from the subterranean formation and into the first and second fluid intakes using the pump, discharging into the borehole at least a portion of the fluid drawn into the second fluid intake, and selectively diverting at least a portion of the fluid drawn into the first fluid intake to the sample chamber.
139 Citations
18 Claims
-
1. An apparatus comprising:
-
first and second intakes to receive formation fluid from a subterranean formation penetrated by a borehole; a pump to draw formation fluid into the first and second intakes and discharge into the borehole at least a portion of the formation fluid drawn into the second intake; a sample chamber in selective fluid communication with the first intake; a first flow line in fluid communication with the first intake and with the sample chamber; and a second flow line in fluid communication with a back side of the sample chamber and with the pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method comprising:
-
positioning an apparatus in a borehole penetrating a subterranean formation, the apparatus comprising first and second fluid intakes, a pump, and a sample chamber; drawing formation fluid from the subterranean formation and into the first and second fluid intakes using the pump; discharging into the borehole at least a portion of the formation fluid drawn into the second fluid intake; selectively diverting at least a portion of the formation fluid drawn into the first fluid intake to the sample chamber; and actuating a pilot relief valve disposed on a flow line between a back of the sample chamber and the pump. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
-
Specification