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Through tubing gun

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Proceedings Papers

Paper presented at the SPE Production Operations Symposium, March 21–23, 1993
Paper Number: SPE-25512-MS
..., U.S.A. Telex, 163245 SPEUT. Abstract A new through-tubing gun with pivoting shaped charges, capable of going through narrow tubing restrictions but with perforlJl&D,ce comparable to the largest guns, is presented. Calculated production results show improvements of 20 to 100 percent over conventional...
Journal Articles
SPE Prod & Oper 5 (01): 33–36.
Paper Number: SPE-16894-PA
Published: 01 February 1990
...-conveyed perforating guns failed to fire. The next option is perforating a well underbalanced with a through-tubing gun. Although the benefits of underbalanced perforating are obtained with through-tubing guns, the small guns often do not adequately penetrate the casing and formation. We have had several...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 22–26, 1985
Paper Number: SPE-14323-MS
... by possible deviations from reported penetrations of the charges supplied by the perforating companies. A third group, through-tubing guns, yielded slightly lower well productivities when compared with the other productivities when compared with the other perforators investigated. perforators investigated...
Proceedings Papers

Paper presented at the SPE Symposium on Formation Damage Control, February 15–16, 1978
Paper Number: SPE-7009-MS
... backsurging with maximum differential pressure to the wellbore. Thus, formation energy is utilized to give good, clean flow channels. 1,2 THROUGH-TUBING GUN APPROACH Overcoming perforating damage with differential to the wellbore when shooting has been used for some time, especially with through-tubing type...
Proceedings Papers

Paper presented at the SPE California Regional Meeting, April 11–13, 1984
Paper Number: SPE-12765-MS
... penetrating casing guns have lower drawdowns and penetrating casing guns have lower drawdowns and significantly lower decline rates than wells perforated with through tubing guns. The high perforated with through tubing guns. The high decline rates at Prudhoe Bay are a result of calcium carbonate scale...
Proceedings Papers

Paper presented at the Permian Basin Oil and Gas Recovery Conference, March 13–15, 1986
Paper Number: SPE-15029-MS
... diameter, through-tubing guns. These guns should be avoided where possible. INTRODUCTION The chief purpose of this study was to evaluate the perforated oilwell completion by computer modeling fluid flow through a porous media into a wellbore. We developed a three- dimensional computer model (dimensions r...
Journal Articles
J Pet Technol 36 (09): 1511–1516.
Paper Number: SPE-11497-PA
Published: 01 September 1984
... greatly. Today, well perforating practices for the field include the use of jet casing and jet practices for the field include the use of jet casing and jet through-tubing guns. The primary objectives of perforating Safaniya field wells are (1) obtain undamaged and productive perforations, (2) shoot...
Proceedings Papers

Paper presented at the SPE International Improved Oil Recovery Conference in Asia Pacific, October 20–21, 2003
Paper Number: SPE-84858-MS
... to perforate these formations balanced or slightly overbalanced, in mud, with through-tubing guns. Results from testing in several wells indicated that if they could be perforated under-balanced, the formations would yield better results since this method would allow better penetration and perforation cleanup...
Proceedings Papers

Paper presented at the 7th World Petroleum Congress, April 2–9, 1967
Paper Number: WPC-12240
... perforation perforator Completion Installation and Operations Petrol retrievable gun assembly through-tubing perforator Upstream Oil & Gas recent development diameter firing penetration T r - T 7.T. RECENT DEVELOPMENTS IN * Abstract Recent developments in perforating include new...
Journal Articles
J Pet Technol 39 (03): 261–262.
Paper Number: SPE-16042-PA
Published: 01 March 1987
..., the characteristics of the formation, and, to a lesser extent, the weight of the explosive. The charges may be held in any of three types of guns: casing guns, expendable guns, and through-tubing guns. The casing gun, which may be run on wireline or conveyed by tubing, is available in diameters from 1 3/8 through 7...
Journal Articles
J Pet Technol 14 (10): 1069–1073.
Paper Number: SPE-381-PA
Published: 01 October 1962
... results achieved with the reactive-liner shaped-charge ("Crack-Jet") perforators and a discussion of the magnetic positioning of perforating guns. Through application of magnetic positioning devices, uniform high-performance perforations may be made in large casings with small, through-tubing guns. Field...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–29, 2004
Paper Number: SPE-90238-MS
... path from the formation, through the cement sheath and casing, and into the completion tubulars. In a fracture-stimulated reservoir, the perforations connect the fracture with the wellbore. The many perforating options include tubing-conveyed or wireline-conveyed systems, casing or through-tubing guns...
Proceedings Papers

Paper presented at the SPE International Production and Operations Conference & Exhibition, May 14–16, 2012
Paper Number: SPE-151294-MS
... sand. The attractive water saturation in the lower sand of 40% from the C/O log might be right.So, we decided to perforate the lower C sand using a through-tubing gun. After perforation, the oil rate spiked at 2000 BOPD and then quickly settled down to 100 BOPD. The cost for the C/O log...
Journal Articles
J Pet Technol 39 (05): 513–514.
Paper Number: SPE-16043-PA
Published: 01 May 1987
...-rad) phasing common in most through-tubing guns alters this flow because only one side on the casing is perforated. Also, when a well is fractured, both wings of the fracture must wrap around the pipe, sometimes as much as 180deg. radi, before reaching the fracture orientation in the formation...
Proceedings Papers

Paper presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition, April 14–16, 1997
Paper Number: SPE-38042-MS
... Abstract When optimising a perforating procedure, many questions need to be answered. For example, is it better to perforate overbalanced with casing guns or underbalanced with tubing conveyed guns?, or which through tubing gun system would be most cost effective? The answers...
Proceedings Papers

Paper presented at the SPE Western Regional Meeting, March 23–25, 1994
Paper Number: SPE-27886-MS
...-tubing well work as possible. PRODUCTION OPTIMIZATION RECOMPLETIONS In 1990 the production optimization was started with a substantial increase in production (Figure 3). A total of 337 feet of gas sands in eight upstructure wells were perforated with through-tubing gun, six holes per foot. The wells were...
Proceedings Papers

Paper presented at the SPE International Symposium and Exhibition on Formation Damage Control, February 13–15, 2008
Paper Number: SPE-112422-MS
... of the explosives and the debris left behind in the perforation channel. The small entry-hole diameter (EHD) made by through-tubing guns contributes to bottomhole friction by creating a large pressure drop across the perforations. Hydraulically jetting with proppant (HJP) to create perforations entails pumping...
Journal Articles
J Pet Technol 17 (06): 647–656.
Paper Number: SPE-1002-PA
Published: 01 June 1965
... with a through-tubing gun. The new perforations were usually in the same interval as the original perforations, and the results were vastly improved potential tests for the well. The consistent success in improving deliverability of these gas wells indicates that the "normal" completion technique produced...
Images
Three conveyance methods for perforating <b>guns</b>: <b>Through</b>-casing and <b>through</b>-t...
Published: 23 May 2011
Fig. 5 Three conveyance methods for perforating guns: Through-casing and through-tubing, and tubing-conveyed systems. The through-tubing gun in the illustration is held against the casing magnetically while the others hang free (modified from Cosad, 1992) . More
Proceedings Papers

Paper presented at the SPE Russian Oil and Gas Technical Conference and Exhibition, October 28–30, 2008
Paper Number: SPE-114793-MS
... pressure necessary to provide clean perforations, (2) the maximum underbalanced pressure that can be tolerated without causing sand production, and (3) recommended underbalanced pressure. 2. Evaluation of Different Perfortaing Techniques 2.1. Through Tubing Gun Perforating System The through-tubing gun...

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