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Ball sealers

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Journal Articles
SPE Prod & Oper 27 (03): 278–283.
Paper Number: SPE-140529-PA
Published: 31 July 2012
... be carried out effectively without stopping the pumps while running ball sealers downhole, the process can be accomplished in a significantly shorter period of time than other techniques. And, because these sealing balls are made of wax, they can be dissolved and removed later by the oil produced from...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 27–30, 1998
Paper Number: SPE-49099-MS
... Abstract A new water-soluble perforation ball sealer has been developed and successfully used as a substitute for conventional ball sealers. They also can and have been used in situations where conventional ball sealers would not be an option due to the potential of creating undesired costly...
Journal Articles
J Pet Technol 36 (10): 1748–1752.
Paper Number: SPE-11500-PA
Published: 01 October 1984
...G.E. Bale Acid jobs utilizing buoyant ball sealers have been performed on several wells with varied downhole conditions and different productivities. The test objectives were to determine buoyant productivities. The test objectives were to determine buoyant ball sealer's diverting efficiency when...
Proceedings Papers

Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, February 7–9, 2018
Paper Number: SPE-189573-MS
... Ball sealers are commonly applied in fracturing and acidizing treatments for diverting treatment fluid to the desired zones by plugging perforations. It has proven that injecting ball sealers is a low-cost and efficient method for diversion. To predict the effectiveness of ball sealers, an improved...
Journal Articles
SPE Prod & Oper 28 (03): 286–295.
Paper Number: SPE-147632-PA
Published: 09 July 2013
...-diversion methods, ball sealers. Ball-sealer diversion is used in cased and perforated wells to divert stimulation fluids by temporarily blocking perforation holes in the casing with rubber-coated balls. This diversion method can be very effective, particularly with highrate injection, but no general...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 30–November 2, 2011
Paper Number: SPE-147632-MS
... Most commonly, ball sealers are heavier than the carrier fluid, so that after the treatment they will fall into the rathole (Economides et al. 1994). However, those non-buoyant ball sealers often fail to provide satisfactory diversion effect (Stipp and Williford 1968; Webster et al. 1964) because...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–12, 2005
Paper Number: SPE-96339-MS
... Abstract Ball sealer diversion has been proven to be both an effective and economic way to selectively stimulate low permeability oil and gas reservoirs in hydraulic fracturing and matrix acidizing treatments. However, the design and implementation of a successful ball sealer diversion...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, May 31–June 1, 1999
Paper Number: SPE-54740-MS
... this idea. Hydraulic fracturing with ball sealers : the objective of such a treatment was to fracture all of the producing layers in one operation. It was necessary to find a diversion method that could be utilised in one operation, that would fracture all of the layers. Ball sealer diversion technique...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 16–19, 1984
Paper Number: SPE-13085-MS
... tests that buoyant ball sealers can provide highly effective diversion. Buoyant balls have been shown to exhibit 100% seating efficiency provided they can be transported down the casing to the perforations. A field-tested design methodology has been developed to maximize and optimize the benefits...
Journal Articles
J Pet Technol 32 (11): 1903–1910.
Paper Number: SPE-8401-PA
Published: 01 November 1980
...Steven R. Erbstoesser Laboratory and field studies are described which demonstrate that diversion of well stimulation treatments can be improved dramatically by using buoyant ball sealers. These sealers have extended ball sealer applicability to treatments conducted at low perforation flow rates...
Journal Articles
J Pet Technol 15 (04): 450–454.
Paper Number: SPE-553-PA
Published: 01 April 1963
... cost than conventional packers, the ball sealer process has become a byword in well completions." Not only has it changed the design of fracture treatments, it has changed the concepts of selectively perforating and has greatly aided the success of the single-point and limited- entry techniques."Yet...
Images
Data fit by  Eq. 15  for nonbuoyant <span class="search-highlight">ball</span> <span class="search-highlight">sealers</span> (1.2 S.G.) in a 60° inclin...
Published: 09 July 2013
Fig. 11 Data fit by Eq. 15 for nonbuoyant ball sealers (1.2 S.G.) in a 60° inclined well. More
Images
<span class="search-highlight">Ball</span> <span class="search-highlight">sealers</span> used: density less than 1 g&#x2F;cc (left), density of 1 g&#x2F;cc (righ...
Published: 31 July 2012
Fig. 1 Ball sealers used: density less than 1 g/cc (left), density of 1 g/cc (right), and density of more than 1 g/cc (center). More
Images
Post frac pressure transient analysis after <span class="search-highlight">ball</span> <span class="search-highlight">sealers</span> Low modulus rock-m...
Published: 28 September 2015
Figure 17 Post frac pressure transient analysis after ball sealers Low modulus rock-must prop to be conductive, “pillars” unlikely More
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Images
Typical treatment plot when using 7&#x2F;8″ bio-<span class="search-highlight">ball</span> <span class="search-highlight">sealers</span>.
Published: 24 January 2017
Figure 6 Typical treatment plot when using 7/8″ bio-ball sealers. More
Images
Typical treatment plot when using 7&#x2F;8″ bio-<span class="search-highlight">ball</span> <span class="search-highlight">sealers</span>.
Published: 24 January 2017
Figure 7 Typical treatment plot when using 7/8″ bio-ball sealers. More
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