Typical Case

Typical Case

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No.

Well

Cementing slurry

Technical Difficulties

1

KS902

HT, HD salt-resisting cementing slurry

The deepest Well in CNPC,(8038m),BHCT>160.HT, HD salt-resisting cementing slurry, the cementing quality: Excellent.

2

HF203

Ultra-density cementing slurry

Two ultra-density (2.70g/cm3) cement plug, create a record of ultra-density in CNPC.

3

YB11

Slim-hole and Narrow Annulus cementing slurry

Φ165.1mm hole with Φ146.1mm+Φ139.7mm liner, the cementing quality: Excellent.

4

TS1

HT anti-gas channeling cementing slurry

The deepest Well in Asia, depth8408m, BHST >180, the cementing quality: Excellent.

5

LN2-S3-19X

Large Temperature Difference low-density cementing slurry

Single-stage casing cementing, depth5210m, the cementing quality: Excellent.

6

KL4

Ultra-density anti-gas channeling cementing slurry

Ultra-density (2.62g/cm3), successfully cementing the8mHP (20MPa) carbonate formation.

7

LD1

Slim-hole with low-density cementing slurry

7248m depth, Φ127mm liner (the deepest depth of Φ127mm liner in Tarim oil field), BHST is 200, density 1.40g/cm3, the cementing quality: Excellent.

8

TZ1-H1

Large Temperature Difference low-density cementing slurry

4848m, Φ177.8mm single-stage casing cementing, density 1.20g/cm3, reverse circulation cementing, the cementing quality: Excellent.

9

YB1- 1

Narrow Annulus  cementing slurry

7248m depth, Φ146.1mm liner, cementing 5622m-7425m, highly deviated well with slim-hole, without centralizer, the cementing quality: Excellent.

10

YB1

Narrow Annulus cementing slurry

7398m depth, Φ146.1mm liner, the cementing quality: Excellent.

11

XW3

HT(Large Temperature Difference) low-density cementing slurry

5200m depth, Φ139.7mm liner, density 1.35/1.85g/cm3, the cementing quality: Excellent.

12

YL31

Air drilling cementing slurry

3179m depth (the deepest air drilling in YB block), Φ244.5mm casing, the cementing quality: Excellent.

13

DW404-2

HT(Large Temperature Difference) anti-gas channeling cementing slurry

Φ177.8mm liner, cementing 3410-6495m, the cementing quality: Excellent.

14

YYHF-1

Shale gas well cementing, Elastic-plastic cementing slurry

Shale gas Well, Φ139.7mm single-stage casing cementing, density 2.20g/cm3, the cementing quality: Excellent.