Formation Fluid Sample Container Apparatus

• US 20160369628A1
• Filed: 08/29/2016
• Published: 12/22/2016
• Est. Priority Date: 09/29/2010
• Status: Active Grant

• Current Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Original Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Inventors: Villareal, Steven G., Harms, Kent David, Murphy, Jeremy, Pop, Julian, Meek, Dale
• Granted Patent: US 10,458,232 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: E21B 27/00 Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
• CPC Class Codes: E21B 49/081 with down-hole means for trapping a fluid sample E21B49/10 takes precedence
• CPC Class Codes: E21B 49/086 Withdrawing samples at the surface
• CPC Class Codes: E21B 49/10 using side-wall fluid samplers or testers

Abstract

Formation fluid sample container apparatus are described. An example apparatus includes a downhole tool having a body including an opening and a cavity extending into the body from the opening. The sample container includes an elongated container for holding a formation fluid sample and a sheath coupled to an outer surface of the elongated container and at least partially surrounding the elongated container. The sample container is fixed in the cavity and the sheath is to increase the mechanical integrity of the elongated container in a downhole environment.

Claims

1. An apparatus, comprising:

a downhole tool having a body including an opening and a cavity extending into the body from the opening; and

a sample container comprising;

an elongated container for holding a formation fluid sample; and

a sheath coupled to an outer surface of the elongated container and at least partially surrounding the elongated container, wherein the sample container is fixed in the cavity and the sheath is to increase the mechanical integrity of the elongated container in a downhole environment.

2. The apparatus of claim 1 wherein the sample container is fixed in the cavity via a pin extending through the sheath and into the body of the downhole tool.

3. The apparatus of claim 1 wherein the sample container is fixed in the cavity via a clamp extending across the opening.

4. The apparatus of claim 1 wherein the sample container is fixed in the cavity via a mesh extending across the opening.

5. The apparatus of claim 1 wherein the sample container is fixed in the cavity via a ring extending about an outer surface of the body and across the opening.

6. The apparatus of claim 1 wherein the sample container is fixed in the cavity via a dovetail connection between the sheath and a recess in the cavity.

7. The apparatus of claim 1 wherein the sample container is fixed in the cavity via ears of the sheath and fasteners extending through the ears into the body.

8. The apparatus of claim 1 wherein the sample container is fixed in the cavity via an interference fit between the sheath and the cavity.

9. The apparatus of claim 1 wherein the sample container is fixed in the cavity via a spacer or a pneumatic jack between an end of the sample container and the cavity.

10. The apparatus of claim 1 wherein the sample container is fixed in the cavity via a threaded connection comprising threads on a portion of the body adjacent the cavity.

11. The apparatus of claim 10 further comprising:

a nut coupled to a groove at one end of the sample container, the nut to couple to the threads to tension the sample container to fix the sample container in the cavity; and

a hook at the other end of the sample container to fix the other end of the sample container to the body.

12. The apparatus of claim 1 wherein the sheath comprises a layer portion of a first material and a cover portion of a second material overlying the layer portion.

13. The apparatus of claim 1 wherein the sheath is coupled to the outer surface of the elongated container via a molding operation, a press-fit, a slip-fit or a shrink-fit.

14. The apparatus of claim 1 wherein the sheath is coupled to the elongated container via a loading assembly comprising a spring pack and a jam nut.

15. The apparatus of claim 1 further comprising a stabber coupled to the elongated container, the stabber to fluidly couple the elongated container to a flowline in the downhole tool when the sample container is fixed in the cavity.

16. The apparatus of claim 1 wherein the body comprises a first body portion threadably coupled to a second body portion, the first and second body portions to cooperate to fix the sample container in the cavity formed by at least one of the first or second body portions.

17. An apparatus, comprising:

a downhole tool having a body including a mandrel holder, the mandrel holder comprising a cavity; and

a sample container disposed in the cavity of the mandrel holder, the sample container to be selectively fluidly coupled to a flowline in the downhole tool.

18. The apparatus of claim 17 further comprising:

a manifold to fluidly couple the flowline to the sample container;

a first valve to selectively fluidly couple the flowline to the sample container;

a second valve to positively seal a sample fluid in the sample container; and

a third valve to relieve a pressure in the flowline.

19. An apparatus, comprising:

an elongated sample container to be disposed in a cavity of a downhole tool, the elongated sample container including a rod having a first end within a fluid storage chamber of the sample container and a second end extending through a sealed opening of the sample container; and

an actuator in the cavity, the actuator to engage the second end of the rod to open a fluid path between a flowline of the downhole tool and the fluid storage chamber when the elongated sample container is inserted into the cavity.

20. The apparatus of claim 19 further comprising:

a key in the cavity to orient the elongated sample container when the elongated sample container is inserted into the cavity; and

o-rings to seal the elongated container to a wall of the cavity.