DOE Office Of Fossil Energy - Phillips Petroleum Company

Horizontal CO2 Injection Profile 7C-11H

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This is the second profile log run on this horizontal injection well. The first Injection Profile was run by a competitor while the well was on water injection and the results are not available.

South Cowden 7C-11H
Casing7" 26# J-554907' MD - 4672' TVD
Tubing31/2" Duoline
PackerPLS4878' MD
X-Nipples2.313" I.D.4226', 4877', and 4888' MD
Wireline Re-entry Guide4898' MD
Open Hole61/8" 4907' - 6244' MD
Injection Rate3.5 MMCF CO2
Injection Pressure1200 PSI
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Work Log
Phillips Petroleum Company
South Cowden, 7C-11H
File Number 13,629
October 4, 1996

October 4, 1996

07:00 Arrive on location.

07:45 Rig up BJ Services coiled tubing unit and N2 unit.

08:00 Rig up Slicklogger encoder and computer system to BJ coiled tubing unit.

Rate and Pressure: 3,400 mcf CO2 at 1196 psi.

09:30 Attach 15' of 1.375" O. D. Dummy Bars and a 2.25" O. D. Spinner Dummy.

09:49 Pressure test lubricator and injector head to 1500 psi with N2 through coiled tubing.

10:17 RIH with 15' of 1.375" dummy bars and a 2.25" spinner dummy to simulate Slicklogger logging tool.

10:51 Pick up test at 4020' (WL).

11:13 Set down at 6254' (WL).

11:40 Begin injecting N2 through coiled tubing at 4000' (WL) to keep ice from forming in coiled tubing.

12:10 Land dummy in lubricator and bleed N2 via coiled tubing.

12:35 Start Sliicklogger tool and surface system.

13:10 Pressure up lubricator with N2 via coiled tubing and RIH with slicklogger tool.

14:00 Log down at 30 fpm from 4800' (WL) to 6244' (WL).

14:45 Log up at 30 fpm from 6244' (WL) to 4800' (WL).

15:20 Log down at 80 fpm from 4800' (WL) to 6244' (WL).

15:39 Log up at 80 fpm from 6244' (WL) to 4800' (WL).

16:00 Take stationary readings at 4800' (WL) and shut in well.

17:00 ONE HOUR SHUT-IN: Log down at 30 fpm from 4800' (WL) to 6244' (WL).

17:44 Pull up hole from 6244' (WL) to 4800' (WL).

18:06 TWO HOUR SHUT-IN: Log down at 30 fpm from 4800' (WL) to 6244' (WL).

18:51 Pull coiled tubing and Slicklogger tool from 6244' (WL) to surface.

20:00 Land Slicklogger tool in lubricator and bleed pressure through coilled tubing.

20:20 Approximately 4 inches of what appears to be outer armor from an electric line was trapped in our flowmeter.

20:30 Download data from Slicklogger tool.

20:50 Data integrity is good. Rig down Slicklogger system and coiled tubing.

21:30 Leave location.


Click here to see the LOG PLOT.

Injecting and shut-in temperatures indicate fluid movement through the horizontal, open hole completion out to a major loss at approximately 6130 feet (MD). We have no evidence of any other losses in the open hole section. However, we must point out that we do not believe either the one hour shut-in or two hour shut-in temperatures to be true decay recordings. Flowmeter plots (not included in this web site) clearly show that CO2 is still expanding from the tubing, into the open hole, up to 3 hours after shut-in. The temperatures labeled as shut-in temperatures are actually injecting temperature passes at declining injection rates. This will mask any small storage's.

Injecting and shut-in temperature pass indicate possible communication out the end of the horizontal section. This call is based on only a .25 degree change at the end of the horizontal section. This minor change in temperature could also be caused by a rising water level in the horizontal wellbore.

Capacitance logs indicate a CO2 / Water interface at approximately 6210 - 6200 feet (MD) while the well is on injection. The one hour shut-in pass shows the interface to have moved in to approximately 6140 feet (MD). The two hour shut-in pass indicates water through out the entire open hole section. Please remember that we were not running centalizers and that these readings do not prove the wellbore to be full of water, but that there is some amount of water in all of the open hole section.

The 2.25" spinner did not operate consistently. There was a substantial amount of a powder like substance along with a piece of outer armor from an e-line trapped in the flowmeter upon retrieving the tool.

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