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Floating Cement Technology of Long Horizontal Well-Well Completion
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Overview

How to guarantee the long norizontal well cementing quallty, become important to the cementing operation.At present,we add some float coupling in the liner and make multiple sealed cavity, fill up the low proportion liquid,make the buoyancy to decrease the weight of casing.Thereby,reducing the friction of horizontal section,to running the casing to the bottom.

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1. Lower resistance force of running casing by floating process.

2. Optimization by using software.

3. Olmprove casing center degree and cementing quality by using semi-rigid centralizer.

4. Float coupling uses fragile materials, do not need to drill down and plug, well will be full bore after being broken.

5. lt is useful for casing to pass irregular bore hole using rotating self-directed float shoe.

6. Special cementing plug, if sticking, displacing can continue after tripping plug.

7. When runningin the hole, telescopic arms are convergent to reduce friction resistance.

8. After setting, telescopic arms are divergent to fix casing.

9. lmprove casing center degree and cementing quality.
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