دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: special conditions or additional requirements that are attached to permits to drill, deepen, or plug back. These conditions range from administrative matters, such as the frequency and number of required reports, to technical or environmental conditions, such as requirements for drilling mud disposal. In all cases, these are specific conditions that amplify or explain a requirement in OCSLA, MMS regulations, OCS Orders, or lease stipulations.

n: a squeeze cementing method in which a packer is set to form a seal between the working string (the pipe down which cement is pumped) and the casing. Another packer or a cement plug is set below the point to be squeezecemented. By setting packers, the squeeze point is isolated from the rest of the well. See packer;squeeze cementing.

n: firstly plug back and set down the packer at the section of cement, then lower the packer through pipe and set down on the section of cement, seperates the section of cement from other section, finally squeeze the cement to predetermined spot through the

plug back total depth.

v: to place cement in or near the bottom of a well to exclude bottom water, to sidetrack, or to produce from a fonna- tion higher in the well. Plugging back can also be accomplished with a mechanical plug set by wireline, tubing, or drill pipe.

n/v: 1 the cement at the bottom of well isolates basal water,. 2 pumping cement at certain depth to side track. 3 sealed off the exhausted reservior underneath , recovery exploring the
top reservior.

to set a plug (usually permanent) in a wellbore, giving a new bottom.

n: the working that second pumping cement . that is drilling in the cement plug certain spot and waitting on cement.

the depth of the well to the top of the last permanent plug.