Problems in cementing horizontal wells

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Journal of Petroleum Technology; (USA)

DOI:https://doi.org/10.2118/20005-PA· OSTI ID:6843345

Sabins, F L ^[1]

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1. Halliburton Services, Duncan, OK (USA)

This paper addresses hole-cleaning problems, displacement mechanics in the hole, pipe centralization, cement slurry design, and the use of acoustic tools to evaluate cement jobs. Settling of solids on the low side of a hole during drilling should be avoided through proper selection of the drilling fluid, especially its dynamic setting characteristics. Uneven clearances between pipe and hole wall resulting from eccentric location of pipe within the hole will lead to uneven cement tops (by as much as hundreds of feet). Spacing between centralizers should be calculated to minimize the effect of pipe sag while maintaining drag at reasonable levels and obtaining the desired displacement performance by the cement slurry. Pipe rotation or reciprocation, especially when properly installed wall cleaners are used in centralized pipe, is beneficial in dislodging and removing solids and gelled cement slurries from the low side of holes. Methods for testing the free-water content of cement slurries (which should be zero) at simulated downhole conditions are suggested.

• OSTI ID: 6843345
• Journal Information: Journal of Petroleum Technology; (USA), Journal Name: Journal of Petroleum Technology; (USA) Vol. 42:4; ISSN JPTJA; ISSN 0022-3522
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ACOUSTIC MONITORING
BOREHOLES
CAVITIES
CEMENTING
CLEANING
DIRECTIONAL DRILLING
DISPERSIONS
DISPLACEMENT FLUIDS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
EVALUATION
FLUID MECHANICS
FLUIDS
FUEL SLURRIES
FUELS
HORIZONTAL INTEGRATION
MECHANICS
MIXTURES
MONITORING
OIL WELLS
PIPES
SLURRIES
SUSPENSIONS
WELL COMPLETION
WELLS