Wells – Processes – Cleaning or unloading well
Patent
1982-09-20
1984-06-12
Novosad, Stephen J.
Wells
Processes
Cleaning or unloading well
E21B 3700
Patent
active
044535988
ABSTRACT:
An improved displacement process for eliminating drilling mud (solids and oil) from a well system prior to introduction of solids-free completion and packer brine. Clean water is circulated in the well system to remove and carry the major portion of the drilling mud. A treated water is prepared from a surfactant and alcohol admixed in clean water. Without interrupting circulation, the treated water displaces the clean water carrying drilling mud from the well system. Circulation of the treated water continues in the well system in which the brine is to be received until substantially all of the drilling mud is carried in the circulating treated water. Again without interrupting circulation, the treated water is displaced from the well system to a suitable disposal region with solids-free clean water. Lastly, the solids-free clean water is displaced from the well system with the solids-free brine.
REFERENCES:
patent: Re23614 (1953-01-01), Denman
patent: 2315734 (1943-04-01), Ralston et al.
patent: 2343430 (1943-03-01), Wells et al.
patent: 2978026 (1961-04-01), Bemis
patent: 3122203 (1964-02-01), Hawkins
patent: 3411580 (1968-11-01), McKinney et al.
patent: 3524908 (1970-08-01), Redmore et al.
patent: 3617568 (1971-11-01), Ries, Jr.
patent: 3787319 (1974-01-01), Larsen
patent: 3798270 (1974-03-01), Lee et al.
patent: 3882029 (1975-05-01), Fischer et al.
patent: 4025443 (1977-05-01), Jackson
patent: 4032460 (1977-06-01), Zilch et al.
patent: 4140639 (1979-02-01), Jackson
patent: 4172801 (1979-10-01), Jackson
patent: 4233162 (1980-11-01), Carney
patent: 4255258 (1981-03-01), Carr et al.
Societe of Petroleum Engineers of AIME (SPE) 9425 "Field Experience Utilizing High Density Brines as Completion Fluids" Laboratory Investigation of Lightweight, Low-Viscosity Cementing Spacer Fluids.
Oliver John E.
Singer Arnold M.
Neuder William P.
Novosad Stephen J.
LandOfFree
Drilling mud displacement process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drilling mud displacement process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drilling mud displacement process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-117587