- Industry: Oil & gas
- Number of terms: 8814
- Number of blossaries: 0
- Company Profile:
A perforating gun assembly that disintegrates upon firing, thereby reducing the volume and dimensions of retrieved components. Expendable guns are typically used where wellbore restrictions allow only limited access, as in through-tubing applications. The distortion caused to the gun assembly during firing would typically prevent recovery of a conventional gun design through the limited clearances. The expendable gun assembly breaks into small pieces that drop to the bottom of the well, leaving only a relatively small subassembly that is easily recovered to surface.
Industry:Oil & gas
A perforating gun designed to be retrieved from the wellbore after firing. Retrievable guns are generally configured for minimal debris and distortion of the gun body to help ensure easy retrieval.
Industry:Oil & gas
A perforating gun assembly designed to run through the restricted clearance of production tubing, then operate effectively within the larger diameter of the casing or liner below. A range of small-diameter guns has been developed for this purpose, although small-diameter casing guns also may be used when larger production tubing sizes permit.
Industry:Oil & gas
A perforating gun assembly designed to be used in a wellbore before the production tubulars or completion equipment have been installed, thus allowing access for a larger diameter gun assembly. Casing guns are typically 3- to 5-in. In diameter and carry up to four perforating charges per foot.
Industry:Oil & gas
A perforating gun assembly designed to be detached from the tubing or running string after firing. The detached assembly can then drop, or be pushed, to the bottom of the well depending on deviation and production requirements. Drop-off gun assemblies often are used in underbalanced perforating applications, eliminating the need to kill the well to recover the spent gun assembly. In such cases, the wellbore will be designed to accommodate the spent gun assembly without compromising productivity, while recovery of the gun assembly may be planned during subsequent workover operations. The drop-off mechanism may be automatic and actuated at time of firing, or be actuated after firing.
Industry:Oil & gas
A perforating charge designed to provide a long perforation tunnel, such as may be required to bypass any near-wellbore damage. Specially designed deep-penetrating charges achieve this additional length while retaining a medium-sized entrance hole, an important consideration in high-shot density applications.
Industry:Oil & gas
A percentage share of production, or the value derived from production, paid from a producing well.
Industry:Oil & gas
A percentage share of production, or the value derived from production, which is free of all costs of drilling and producing, and is created by the lessee or working interest owner and paid by the lessee or working interest owner.
Industry:Oil & gas
A percentage share of production, or the value derived from production, which is free of the costs of drilling and producing, created by the lessor or royalty owner and borne by the lessor or royalty owner out of the lessor royalty. This royalty is paid to nonparticipating interest holders who do not share or participate in bonus or rentals, or a right to explore, or a right to execute oil and gas leases.
Industry:Oil & gas
A percentage share of production, or the value derived from production, which is granted to the lessor in the oil and gas lease, and which is free of the costs of drilling and producing.
Industry:Oil & gas
