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Title:
SUSPENDED FLUID SAMPLING & MONITORING
Document Type and Number:
WIPO Patent Application WO/2016/196425
Kind Code:
A4
Abstract:
A suspended fluid sampling and monitoring system includes a BOP, the BOP attached to a wellhead. The BOP is positioned above a wellbore. The suspended fluid sampling and monitoring system further includes a TEC, the TEC connected to a sensor package. The TEC and sensor package extend through the BOP into the wellbore. The suspended fluid sampling and monitoring system also includes a fluid sample line, the fluid sample line extending through the BOP into the wellbore. The suspended fluid sampling and monitoring system also includes a fluid sample intake and filtration device, the fluid sample intake and filtration device mechanically coupled to the fluid sample line within the wellbore.

Inventors:
SIEFERT MICHAEL (AU)
Application Number:
PCT/US2016/034951
Publication Date:
January 26, 2017
Filing Date:
May 31, 2016
Export Citation:
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Assignee:
GAS SENSING TECH CORP (US)
International Classes:
E21B47/008; E21B49/08
Attorney, Agent or Firm:
LOCKLAR, Michael (US)
Download PDF:
Claims:
AMENDED CLAIMS

[received by the International Bureau on 14 December 2016 (14.12.2016)]

1. A suspended fluid sampling and monitoring system comprising:

a TEC, the TEC connected to a sensor package, the TEC and the sensor package extending into a wellbore;

a fluid sample line, the fluid sample line extending into the wellbore; and

a fluid sample intake and filtration device, the fluid sample intake and filtration device mechanically coupled to the fluid sample line within the wellbore.

2. The suspended fluid sampling and monitoring system of claim 1 further comprising an HWO, the HWO mechanically connected to the fluid sample line.

3. The suspended fluid sampling and monitoring system of claim 1, wherein the TEC, the fluid sample line, and the sensor package are suspended from a BOP, the BOP attached to a wellhead, the BOP positioned above the wellbore, wherein the TEC extends through the BOP, and wherein the fluid sample line extends though the BOP.

4. The suspended fluid sampling and monitoring system of claim 1, wherein the TEC, the fluid sample line, and the sensor package are suspended from a seat in a BOP clamp housing, the BOP clamp housing positioned above the wellbore, wherein the TEC extends through the BOP clamp housing, and wherein the fluid sample line extends though the BOP clamp housing.

5. The suspended fluid sampling and monitoring system of claim 1, wherein the sensor package is mounted in a BHA tool string.

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6. The suspended fluid sampling and monitoring system of claim 1, wherein the sensor package is adapted to measure temperature, pressure, fluid conductivity, pH or a combination thereof.

7. The suspended fluid sampling and monitoring system of claim 1, further comprising a junction box, the junction box mechanically connecting the TEC to a surface electrical cable.

8. The suspended fluid sampling and monitoring system of claim 7, wherein electrical power is transmitted to the sensor package by a surface telemetry unit via the surface electrical cable and the TEC.

9. The suspended fluid sampling and monitoring system of claim 8, wherein the surface telemetry unit is adapted to process data, store data, transmit data, or a combination thereof.

10. The suspended fluid sampling and monitoring system of claim 1, wherein a portion of the TEC is spooled on an electrical cable reel.

1 1. The suspended sampling and monitoring system of claim 1, wherein the fluid sample line extends from a hydraulic tube reel.

12. The suspended sampling and monitoring system of claim 1, wherein the fluid sample intake and filtration device is located proximate an aquifer within a formation.

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13. The suspended sampling and monitoring system of claim 1, wherein the fluid sample line is clamped to the TEC at intervals within the wellbore.

14. A suspended fluid sampling and monitoring system comprising:

a BOP, the BOP attached to a wellhead, the BOP positioned above a wellbore;

a TEC, the TEC connected to a sensor package, the TEC extending through the BOP into the wellbore, the TEC having a free end located outside the wellbore;

a fluid sample line, the fluid sample line extending through the BOP into the wellbore, the fluid sample line having a free end located outside the wellbore, the fluid sample line terminating in a fluid sample intake and filtration device;

an HWO, the HWO mechanically connected to the fluid sample line; and

an EWO, the EWO mechanically connecting the TEC to a surface electrical cable.

15. The suspended fluid sampling and monitoring system of claim 14, wherein the free end of the TEC is connected through a first port of a wellhead adapter spool to the EWO.

16. The suspended fluid sampling and monitoring system of claim 14, wherein the free end of the fluid sample line is connected through a second port of a wellhead adapter spool to the HWO.

17. The suspended fluid sampling and monitoring system of claim 14, wherein the HWO comprises:

a pressure-blocked feedthrough assembly;

a feedthrough connector, the feedthrough connector mechanically coupled to the pressure-blocked feedthrough assembly; a sample release valve, the sample release valve mechanically coupled to the feedthrough connector; and

a quick connect fitting, the quick connect fitting mechanically coupled to the sample release valve.

18. The suspended fluid sampling and monitoring system of claim 14, wherein the fluid sample intake and filtration device comprises:

a fluid intake hydraulic conduit, the fluid intake hydraulic conduit adapted to terminate the fluid sample line;

a hydraulic conduit wall, the hydraulic conduit wall having perforations; and an electrical conduit, the electrical conduit adapted to pass through the TEC.

19. The suspended fluid sampling and monitoring system of claim 14, wherein the fluid sample intake and filtration device is comprised of a first split body and a second split body, wherein the first split body and the second split body are adapted to clamp around the fluid sample line and the TEC.

20. The suspended fluid sampling and monitoring system of claim 14, further comprising a multi-line clamp, the multi-line clamp comprising a clamp hydraulic conduit adapted to allow the fluid sample line to pass through the multi-line clamp and a clamp electrical conduit, the clamp electrical conduit adapted to allow the TEC to pass through the multi- line clamp.

21. A method comprising: providing a fluid sample line, the fluid sample line passing through a second port in a wellbore adapter spool and into a wellbore, the wellbore containing fluid, the wellbore adapter spool in fluid communication with the wellbore;

providing a TEC, the TEC passing through a first port in the wellbore adapter spool and into the wellbore;

providing a BCM, the BCM connected to a blowdown port in the wellbore adapter spool;

providing a BOM, the BOM connected to a bleedoff port in the wellhead adapter spool;

calibrating by blowing down the fluid from an initial fluid height to a fluid height after calibration;

initially blowing down the fluid after the calibration step to a second fluid height after purge using a first gas cap pressure;

allowing fluid to enter the wellbore from an aquifer to reach the initial fluid height; and

blowing down the fluid from the initial fluid height to a fluid height after recovery using a second gas cap pressure.

22. The method of claim 21, wherein the BCM comprises a control valve in fluid communication with an isolation valve, and wherein the BCM is connected to a gas source.

23. The method of claim 22, wherein the gas source is an air cylinder, a nitrogen cylinder, a nitrogen tank, an air compressor, or a nitrogen generator.

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24. The method of claim 21, wherein the BOM comprises a BOM valve in fluid communication with a pressure gauge.

25. The method of claim 22, wherein the calibrating step comprises:

determining an initial wellbore pressure;

determining the first gas cap pressure and the second gas cap pressure;

setting the control valve to a calibration gas cap pressure;

opening the isolation valve; and

allowing the gas from the gas source to enter the wellbore.

26. The method of claim 25, wherein the first and second gas cap pressures are determined using Bernoulli's Solution.

27. The method of claim 26, wherein the first and second gas cap pressures are different.

28. The method of claim 22, wherein the initial blowing down step comprises:

setting the control valve to the first gas cap pressure;

opening the isolation valve;

allowing the gas from the gas source to enter the wellbore; and

displacing a first amount of fluid through the fluid sample line.

29. The method of claim 22, wherein the fluid sample line is mounted to the wellbore adapter spool using a HWO.

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30. The method of claim 29, wherein fluid is removed through the HWO in the calibrating step, the initial blowing down step and the step of blowing down the fluid from the initial fluid height to a fluid height after recovery using a second gas cap pressure.

31. The method of claim 29, wherein the step of allowing fluid to enter the wellbore from an aquifer comprises:

closing a sample release valve;

closing the isolation valve;

opening the BOM valve to bleed the first gas cap pressure to the initial wellbore pressure; and

allowing the fluid to return to the initial fluid height.

32. The method of claim 29, wherein the step of blowing down the fluid from the initial fluid height to a fluid height after recovery using a second gas cap pressure comprises: setting the control valve to the second gas cap pressure;

opening the sample release valve;

opening the isolation valve; and

recovering a fluid from the wellbore through the sample release valve.

33. The method of claim 29 further comprising during the step of recovering the fluid from the wellbore:

measuring the salinity, pH, fluorescence potential, turbidity, temperature, pressure, or a combination thereof of the fluid.

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34. The method of claim 29 further comprising after the step of blowing down the fluid from the initial fluid height to a fluid height after recovery using a second gas cap pressure:

closing the sample release valve;

closing the isolation valve; and

bleeding off the second gas cap pressure by opening the BOM valve.

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