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Keywords: perforation
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Proceedings Papers

Paper presented at the SPE Oklahoma City Oil and Gas Symposium, April 9–10, 2019
Paper Number: SPE-195221-MS
.... Compared to the warm-back effect in the non-fractured region after shut-in, a less significant heating effect is observed in the fractured region because of the warmer fluid away from the perforation moving into the fracture (after-flow). Detailed parametric analyses are conducted on after-flow velocity...
Proceedings Papers

Paper presented at the SPE Oklahoma City Oil and Gas Symposium, April 9–10, 2019
Paper Number: SPE-195230-MS
... potential. Even though hydraulic fracturing with multiple perforations allows various producing zones, the stagnant fluid flow in the horizontal section induces flow instability. The resulting terrain slug in the horizontal section blocks the perforation flow, preventing the fluid from moving up...
Proceedings Papers

Paper presented at the SPE Oklahoma City Oil and Gas Symposium, March 27–31, 2017
Paper Number: SPE-185094-MS
... were shut down for a period of time. When pumping resumed, no circulation was observed. The 4.5-in. production casing was squeeze-cemented during a remediation phase. Table 1 shows details of the fracture treatment design for the top and bottom perforation of each stage. Note that the spacing...
Proceedings Papers

Paper presented at the SPE Oklahoma City Oil and Gas Symposium, March 27–31, 2017
Paper Number: SPE-185093-MS
... Abstract Production logs from horizontal wells in shale reservoirs indicate that more than 30% of the perforation clusters do not contribute to production. One major reason is recognized as the stress shadow effect which impedes the propagation of the interior fractures within a single fracture...
Proceedings Papers

Paper presented at the SPE Oklahoma City Oil and Gas Symposium, March 27–31, 2017
Paper Number: SPE-185120-MS
... situation depends on many factors, including the type of well completion, perforation pattern, zonal isolation method, and stimulation technique. Selection of the most appropriate diversion method is also influenced by variations in formation permeability or stress contrasts along the interval to be treated...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, March 1–5, 2015
Paper Number: SPE-173611-MS
... and perforations could be susceptible to mistakes and may be perceived as subjective at times, while also being time and effort consuming. The workflow based on reservoir quality (RQ) and completion quality (CQ) developed in North America for unconventional resources for optimizing completion decisions brings...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, March 1–5, 2015
Paper Number: SPE-173612-MS
... into account that in cooler formations, longer times are required to achieve complete degradation. Its independence of the wellbore geometry has increased the implementation in openhole and cased-hole completions, despite the final shape of the perforations. Reservoir Surveillance hydraulic fracturing...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, March 23–26, 2013
Paper Number: SPE-164510-MS
... In a well, the largest available flow area is the cross section of the wellbore. Thus, using the wellbore as the separator will yield the maximum liquid capacity when the pump intake is set below the bottommost perforations as shown in Figure 1 . Abstract Advances in horizontal drilling...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, March 27–29, 2011
Paper Number: SPE-139813-MS
... lateral length reservoir quality proppant production outcome hydraulic horsepower spe 139813 bottomhole hydraulic horsepower completion stimulation span completion trend wellbore oklahoma woodford shale basin perforation society of petroleum engineers Introduction Shown in Fig. 1...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, March 27–29, 2011
Paper Number: SPE-141036-MS
... of the wells within the field started experiencing liquid loading issues and decreased production rates due to the fact that most of them had very long perforated intervals and were severely pressure-depleted. Typical gas-lift systems that were incorporated during this time involved running tubing and gas-lift...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, March 27–29, 2011
Paper Number: SPE-141669-MS
... perforations over 600 ft spread; (iii) low liquid flow (<400 BPD); (iv) high gas-liquid ratio (>1600 CF/BBL); (v) deep well depth (10,000 ft); (vi) small ID production casing (5.5" 17lb/ft); and, (vii) high potential wellbore scaling/corrosion issues. Due to these challenges, using a traditional motor...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, March 27–29, 2011
Paper Number: SPE-142291-MS
... When designing a water-shutoff job, several variables, such as tubular size, perforation depth, perforated zone height, and bottomhole temperature should be considered. The tubular size is important for determining pump times and flush volumes. The pump time is a key factor when adjusting setup...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, April 4–8, 2009
Paper Number: SPE-120643-MS
... conditions exist such as very shallow liquid levels, very deep liquid levels, noisy wells, high bottomhole temperature, and low or high surface pressures. Some gas wells have gas lift mandrels, liners, multiple zones of perforations, tubing holes, flush pipe and other conditions which result...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, April 4–8, 2009
Paper Number: SPE-120473-MS
... Abstract Conditions leading to plugging of perforations in wells and pore-throats in porous formations are investigated experimentally. Accurate correlations are developed for the effect of pore-throat-to-particle-size ratio on flowing fluid conditions and plugging time leading to particle...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, April 4–8, 2009
Paper Number: SPE-119377-MS
..., preventing fluid from falling below the turbulent perforations to the pump intake. The concept of "Batch Pumping" is presented to industry as a simple, cost effective method to solve this separation problem for any well with this liquid holdup problem. Reservoir Surveillance controller production...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, April 4–8, 2009
Paper Number: SPE-119639-MS
... by perforating with explosive shaped charges. The effectiveness of this connection is the result of perforator selection criteria and the well environment in which the perforating job is executed. In the depleted oil field under study a typical completion is perforated using large Tubing Conveyed (TCP) guns...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, April 4–8, 2009
Paper Number: SPE-120508-MS
... Abstract Fracturing is an important technique for stimulating production in low-permeability formations, and requires special consideration in designing the preceding perforating job. Aligning the perforations along the direction of maximum geological stress, known as the preferred fracture...
Proceedings Papers

Paper presented at the Production and Operations Symposium, March 31–April 3, 2007
Paper Number: SPE-106700-MS
... a workover strategy for a well originally drilled in 1989 to a total depth (TD) of 8,010 ft. and completed with 5-1/2 in., 17# K-55 casing. After perforating from 7,514 to 7,740 ft and acidizing, the Barnett Shale was abandoned. The well was then completed in three Atoka Conglomerates from 5,886 to 5,900 ft...
Proceedings Papers

Paper presented at the Production and Operations Symposium, March 31–April 3, 2007
Paper Number: SPE-106532-MS
... proppant flowback. However, a key problem with using these materials has been the inability to achieve a uniform placement of the resin into propped fractures for the entire perforated interval. This problem is amplified by the presence of variable permeability, perforation debris, formation damage...
Proceedings Papers

Paper presented at the Production and Operations Symposium, March 31–April 3, 2007
Paper Number: SPE-106651-MS
... and optimizations to techniques are presented along with areas for future investigations. drilling fluid selection and formulation zonal isolation drilling fluid chemistry downhole intervention drilling fluids and materials drilling fluid formulation packer repair composite plug Leak perforation...

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