Pressure recorder carrier and method of use
AssigneeMarathon Oil Company
InventorsCharles F. Garbutt, David E. Ellwood
Life of this patent
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Abstract
A means for taking pressure readings in a bottom-hole zone of a well without interfering with an operation in which solid material is moving through a tubing string. A pressure recorder is enclosed in a carrier attached to the outer surface of a tubing sub near the end of the tubing string. The carrier walls include ports which expose the pressure recorder to the fluid in the bottom-hole zone. This arrangement allows operations such as sand fracture stimulations and rod pumping to be unimpeded by a pressure recorder.
Claims7
A method of collecting bottom-hole pressure data in a well in which a fracture stimulation operation is being carried out, comprising:
- attaching a pressure recorder carrier to the outer surface of a portion of a tubing string intended to extend into the bottom-hole region of the well;
- providing fluid communication means between the exterior and interior of the pressure recorder carrier so as to expose the interior of the carrier to pressure in the bottom-hole region;
- placing a pressure recorder in the carrier;
- introducing the tubing string into the bottom-hole region of the well adjacent a zone of interest;
- providing a packer through which the tubing string extends, the packer sealing the annulus between the tubing string and the sidewall of the well above the zone of interest;
- causing proppant particles and treatment fluid to flow downwardly through the tubing string and into the zone of interest;
- and
- collecting bottom-hole pressure data with the pressure recorder.
A method of collecting bottom-hole pressure data in a well in which fluid is being pumped from a bottom-hole zone, the well containing a tubing string extending down to the bottom-hole zone and in which a rod string is reciprocating, the rod string being connected to a pump located in the tubing string in the bottom-hole zone, comprising:
- attaching a pressure recorder carrier to the outer surface of a portion of a tubing string intended to extend into the bottom-hole region of the well;
- providing fluid communication means between the exterior and interior of the pressure recorder carrier so as to expose the interior of the carrier to pressure in the bottom-hole region;
- placing a pressure recorder in the carrier;
- introducing the tubing string into the well;
- introducing a pump and rod string into the tubing string;
- actuating the pump to pump fluid from the bottom-hole zone;
- and
- collecting bottom-hole pressure data from the pressure recorder.
In a well containing a tubing string in which solid material is moving, the tubing string extending down to a bottom-hole region in which it is desired to collect bottom-hole pressure data, the improvement comprising:
- a pressure recorder carrier attached to the outer surface of the tubing string in the bottom-hole region of the well;
- the pressure recorder carrier being comprised of an elongated container attached to a tubing sub, the container including a wall having a plurality of ports therein permitting fluid from the bottom-hole region of the well to flow to the interior of the pressure recorder carrier, the pressure recorder carrier having end portions of streamline configuration;
- and
- a pressure recorder in the carrier.
Dependencies are inferred from the claim text.