CASE FEEDBACK

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Case 1

Project：APPRAISAL WELLS F.B.DST TESTS
Location：SOUTH AZADEGAN OIL FIELD-IRAN
Tools involved：All of the down hole DST tools from Changyou, such as:
Tester Valve (LPR-N)-Select Tester Valve (STV)-RD &

RD Safety Circulating Valves – Slip Joints – Hydraulic Jar.etc.

Well conditions：
1、Depth: 4000 meters
2、Bottom pressure & temperature: 9000psi & 270 °F
3、H2S composition: Max H2S content 6000 PPM (0.6%)
4、Brief operations：R.I.H F.B.DST tools -Set the RTTS Packer at the designed depth- opened Tester Valve (LPR-N) by applying required pressure through annulus , performed well acidizing –well clean up and finally testing the well –at the end of the test POOH F.B.DST tools and start maintenance and making ready the tools for next job.

Site pictures:
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Case 2

Project：HPHT GAS WELLS PROJECT
Location：BOHAI SEA,CHINA
Tools involved：15K, Round mandrel slip joint-Changyou

Well conditions：
1、Depth: 4499 m
2、Bottom pressure&temperature: 47.73Mpa &172℃
3、H2S composition:H2S 10PPM
4、Result and client’s comments of tools：
Before RIH, maintence and pressure test are good and qulified to RIH. During the job, the tool perfoemed well and tool’s state is good after POOH.
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