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Clay stabilizer

Selected clay stabilizers are shown in Table 1-10. Thermal-treated carbohydrates are suitable as shale stabilizers [1609-1611]. They may be formed by heating an alkaline solution of the carbohydrate, and the browning reaction product may be reacted with a cationic base. The inversion of nonreducing sugars may be first effected on selected carbohydrates, with the inversion catalyzing the browning reaction. [Pg.20]

The problems caused by shales in petroleum activities are not new. At the beginning of the 1950s, many soil mechanics experts were interested in the swelling of clays. It is important to maintain wellbore stability dining drilling, especially in water-sensitive shale and clay formations. The rocks within these types of formations absorb the fluid used in drilling this absorption causes the rock to swell and may lead to a wellbore collapse. The swelling of clays and the problems that may arise from these phenomena are reviewed in the literature [528,529,1788,1900]. Various additives for clay stabilization are shown in Table 3-1. [Pg.58]

The literature offers several papers that may serve as guidelines for issues such as selecting a proper clay stabilizing system or completing wellbore stability analyses of practical well designs [367,427-429,562,1565]. [Pg.61]

A drilling fluid additive, which acts as a clay stabilizer, is the reaction product of methylglucoside and alkylene oxides such as ethylene oxide, propylene oxide, or butylene oxide. Such an additive is soluble in water at ambient conditions, but becomes insoluble at elevated down-hole temperatures [386], Because of their insolubility at elevated temperatures, these compounds concentrate at important surfaces such as the drill bit cutting surface, the borehole surface, and the surfaces of the drilled cuttings. [Pg.64]

Figure 3-1. Monomers for clay stabilizers 2-acrylamido-2-methyipropane sulfonic acid, 1-allyloxy-2-hydroxypropyl sulfonic acid. Figure 3-1. Monomers for clay stabilizers 2-acrylamido-2-methyipropane sulfonic acid, 1-allyloxy-2-hydroxypropyl sulfonic acid.
Additives that assist the creation of a fracture include viscosifiers, such as polymers and crosslinking agents temperature stabilizers pH control agents and fluid loss control materials. Formation damage is reduced by such additives as gel breakers, biocides, surfactants, clay stabilizers, and gases. [Pg.236]

Advances in clay-bearing formation treatment have led to the development of numerous clay-stabilizing treatments and additives. Most additives used are high-molecular-weight cationic organic polymers. However, it has been shown that these stabilizers are less effective in low-permeability formations [834]. [Pg.250]

The use of salts, such as potassium chloride and sodium chloride, as temporary clay stabilizers during oil well drilling, completion, and servicing, has been... [Pg.250]

These properties were used to synthesize an organic cation (Table 17-10) with a higher efficiency as a clay stabilizer than the typical salts used in the oil industry to this point. These additives provide additional benefits when used in conjunction with acidizing and fracturing treatments. A much lower salt concentration can be used to obtain the same clay-stabilizing effectiveness [830, 833]. The liquid product has been proven to be much easier to handle and transport. It is environmentally compatible and biodegradable in its diluted form. [Pg.251]

Recent developments have led to the synthesis of a new class of clay-stabilizing chemical additives capable of successfully stabilizing clays in very-low-permeability sandstones, that is, low molecular salts. [Pg.251]

Interactions Between Fracturing Fluid Additives and Enzyme Breakers. Despite their advantages over conventional oxidative breakers, enzyme breakers have limitations because of interferences and incompatibilities with other additives. Interactions between enzyme breakers and fracturing fluid additives including biocides, clay stabilizers, and certain types of resin-coated proppants have been reported [1455]. [Pg.262]

M. Alonso-Debolt and M. Jarrett. Synergistic effects of sulfosuccinate/ polymer system for clay stabilization. In Proceedings Volume, volume PD-65, pages 311-315. ASME Energy-Sources Technol Conf Drilling Technol Symp (Houston, TX, 1/29-2/1), 1995. [Pg.348]

A. Audibert, J. Lecourtier, L. Bailey, P. L. Hall, and M. Keall. The role of clay/polymer interactions in clay stabilization during drilling. In Proceedings Volume, pages 203-209. 6th Inst Francais Du Petrole Explor Prod Res Conf (Saint-Raphael, France, 9/4-9/6), 1992. [Pg.352]

C. W. Crowe. Laboratory study provides guidelines for selecting clay stabilizers. In Proceedings Volume, volume 1. Cim Petrol Soc/SPE Int Tech Mtg (Calgary, Canada, 6/10-6/13), 1990. [Pg.375]

B. Evans and S. Ali. Selecting brines and clay stabilizers to prevent formation damage. World Oil, 218(5) 65-68, May 1997. [Pg.385]

R. E. Himes. Method for clay stabilization with quaternary amines. Patent US 5097904,1992. [Pg.404]

R. E. Himes, E. F. Vinson, and D. E. Simon. Clay stabilization in low-permeability formations. In Proceedings Volume, pages 507-516. SPE Prod Oper Symp (Oklahoma City, OK, 3/12-3/14), 1989. [Pg.404]

R. E. McGlothlin and F. B. Woodworth. Well drilling process and clay stabilizing agent. Patent US 5558171, 1996. [Pg.430]

J. A. Schield, M. I. Naiman, and G. A. Scherubel. Polyimide quaternary salts as clay stabilization agents. Patent GB 2244270,1991. [Pg.456]

Z. J. Zhou, W. D. Gunter, and R. G. Jonasson. Controlling formation damage using clay stabilizers a review. In Proceedings Volume, volume 2.46th Annu CIM Petrol Soc Tech Mtg (Banff, Canada, 5/14-5/17), 1995. [Pg.480]

Avoid injection of low-salinity solutions in water-sensitive (particularly montmorillonite) formations. Use clay stabilizers. Neutralize before injection. [Pg.814]

By using a clay stabilizing quaternary ammonium salt polymer, formation damage associated with low salinity polyacrylamide solvents can be reduced (348). [Pg.37]

The formation may also contain minerals that are chemically or physically sensitive to the fluid. For that reason clay stabilizing agents, surfactants(5), etc. are also added to the fluids. Fluids that will be produced from the well may contain problem-causing... [Pg.62]

Another recent innovation to improve the efficiency of polymer addition to water and derive the maximum yield from hydrophylic polymers was introduced by Briscoe(165,166). The method involved the preparation of a stabilized polymer slurry (SPS) to be added to water. Briscoe used water as the suspension liquid, usually also containing dissolved KC1 as a clay stabilizer, and formulated a package of inhibitors (borate and caustic) to prevent the polymer from hydrating until the pH was lowered. These concentrates remain in routine use today. [Pg.80]

Veley, C. Casey, G., Jr. "In-Place Clay Stabilization Cuts Formation Sand Entry" World Oil(June 1973)52-54. [Pg.96]


See other pages where Clay stabilizer is mentioned: [Pg.20]    [Pg.21]    [Pg.58]    [Pg.59]    [Pg.59]    [Pg.61]    [Pg.63]    [Pg.105]    [Pg.236]    [Pg.250]    [Pg.251]    [Pg.251]    [Pg.345]    [Pg.345]    [Pg.346]    [Pg.25]    [Pg.26]    [Pg.43]    [Pg.61]    [Pg.69]    [Pg.93]    [Pg.96]   


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Stability Against Claying or Caking

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