Down hole blow out preventer and method of use

Details Down hole blow out preventer and method of use Down hole blow out preventer and method of use

1984-05-10

1986-05-13

Leppink, James A.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Measuring or indicating drilling fluid rate of flow

166187, 166188, 166325, 166373, E21B 33127

Patent

active

045880352

ABSTRACT:
A down hole blow out preventer which can be installed at the lower end of a drill string as close as possible to the drill bit and which can isolate an unexpected producing zone in a bore hole from the rest of the hole by closing off the drill string at its lower end and closing off the annulus between the drill string and the wall of the bore hole by means of an inflatable packer. The packer can be operated when a predetermined pressure difference exists between the annulus and the mud column inside the tool.

REFERENCES:
patent: 3351349 (1967-11-01), Chenoweth
patent: 3908769 (1975-09-01), Schuyf et al.
patent: 3941190 (1976-03-01), Conover
patent: 4367794 (1983-01-01), Bednar et al.

Affiliated with

Also associated with

Rating

Down hole blow out preventer and method of use does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Down hole blow out preventer and method of use, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Down hole blow out preventer and method of use will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1764900