Ji Gang Wang

The Performance Evaluation of Solid Free Completion Fluid

The solid free completion fluid is the KCl-polymer system, it has the good inhibitory and stabilize the clay. The corrosion rate is 0.0775 g/m2·h, for different permeability core, the degree of injury is less than 20%.Use completion fluid to reduce oil layer damage of main mechanism for the effect of k+, inhibition of polymer and the synergy of K + and polymer.

The Performance Evaluation of New Low Temperature early Strength Agent ZL-1

Low temperature early strength cement slurry is a slurry in order to meet the well cementation in low-temperature conditions. Daqing weather is characterized by the silica fume, solid alcohols, amines and anionic polymers prepared a certain proportion, got a new low temperature early strength agent, It can greatly accelerate the hydration rate of cement and promote the formation of the cement paste early strength; and no chlorine ions, able to overcome the problem caused by traditional chlorine early strength agent casing corrosion.

Expansion Slurry System Research

In-depth development of a block of Sudan, effectively develop the rich reserves of the major reservoirs, increase crude oil production, and reduce the cost of drilling.This horizon has a high penetration, high formation temperature, easy to collapse, gas channeling and complex problem, there is a great test of this case to horizontal wells cementing.Therefore, develop a new expansion slurry system,which has the feature of high-strength, low water loss, gas channeling effect, solves the region problems of cementing technical. A block of Sudan formation pressure coefficient is low, fracture pressure is small, strata is sulfur loose sandstone, and stratigraphic diagenetic is poor, easy to collapse and necking.With the deepening of the development ,these issues are more and more obvious.In order to achieve the best results in the horizontal well cementing operations, we research from geological data, well structure, cementing formulations and process in-depth and meticulous. Solve the high permeability formation temperature, easy to collapse, gas channeling technical problems, develope a new type of high-strength, low water loss, micro-expansion slurry system, and effectively solve the block problem of horizontal wells cementing .

The Determination and Performance Evalution of Slurry System in Haita Region

For the unique geological features in Haita area, we optimized the synthesis conditions of slurry fluid loss additive ZJK103 and evaluated its performance. The experimental results showed that under different water conditions, water quality had no effect on fluid loss of ZJK103; The fluid loss additive had no adverse impact on compressive strength of cement stone; With same mixing water and different conserving water, the compressive strength did not change much. ZJK103 had better thickening effect than other average fluid loss additives. According to the performance of slurry system, the indoor synthetic slurry filtrate reducer could meet the quality requirements of Haita region cementing.

The Application of Fiber Cement Slurry Used to Prevent and Block Leak

Aimed at the cement slurry leak problem in the leakiness area cementing of Jilin oilfield, the fiber cement slurry system was developed. The general performance of fiber cement slurry, such as the pressure strength, thickness time, filter loss, flowing ability and water separate rate, etc was analysis in the room condition. The preventing and block leak ability was evaluated. The room and field tests prove that the ability of the fiber cement slurry is best. It can make the field cementing requirement in the leakiness formation and has the best effect of preventing and block leak ability.

The Evaluation of Factors Affecting the Performance of Heavy Oil Emulsion

In this paper,we used the heavy oil of Du 84,53-55 well in Liaohe oil field,analyzed of the impact factors of the heavy oil emulsion viscosity.When the droplet size of the emulsion is reduced,the viscosity of the heavy oil emulsion increases,and the non-Newtonian obvious.Heavy oil emulsions exhibit Newtonian fluid properties at low shear rate,exhibits shear-thinning properties in the heavy oil emulsion under high shear rate.Heavy oil emulsion viscosity decreases with the increasing concentration of viscosity reducer,when the viscosity reducer concentration of more than 0.25%,heavy oil emulsion viscosity declines slowed.

A Study on Suizhong 36-1 Oil Field Acid Sludge Formation Influence Factors

Acid sludge is one of the major oil field acidification increased production ineffective. Therefore, the acid sludge formation of influencing factors on improving acidification effect is of great importance. The Suizhong 36-1 oilfield is selected as the research object , a more in-depth study of the acid sludge formed in the acidification process influencing factors . The results show that: With the increase of crude oil in the colloid and asphaltene content , the amount of oleic acid mixture to form acid sludge also increases . Strong acid ionizing out of the higher concentration of H+ , the faster of the speed, the forming acid slag trend is obvious. The residual acid pH value increased , the amount of acid sludge also will continue to rise.

Synthesis and Evaluation of a New Type of Cationic Gemini Surfactant

A cationic Gemini surfactant ethane-1, 2-bis (Cetyl dimethyl brominated ammonium), denoted 16-2-16 was synthesized from ethane and Hexadecyl dimethyl amine. The properties of the product were characterized, and the physical and chemical properties were determined. The results showed that the synthetic product was the target product, and its surface tension was 3.4×10-4N/m, and the CMC was 2.2×10-4mol/L at 25°C. At the same time, its synergistic effect with common surfactants was studied; the results showed that the synthetic product had good synergic effect.

Visco-Elastic Property Studies on Polymer Flooding Systems with High Concentrations

Keywords: Visco-elastic property; polymer flooding; oil recovery Abstract. Polymer flooding and ASP flooding has improved oil recovery a lot in Daqing oil field. In ASP flooding, the existence of alkali decreases the visco-elastic characteristic of polymer, which decreases the oil recovery of polymer flooding. The aim of this paper was to study the visco-elastic characteristic, shear resistance in high concentration and high molecular weight polymer flooding, and analyzed the suitable parameter of it .They can provide the theory of polymer flooding development and application research.

Application of Solid Nitric Deplugging Technology

In order to conquer the disadvantages of conventional acidizing,various special acidizing technology has been developed recent years.For instance, added mud acid into drilling mud is not able to remove the contaminant effectively, especially barium sulphide of drill fluid,however, if added some EDTA into mud acid,this problem can be resolved smoothly.Along with the gradual development of acidizing technology,considering the limitations of mud acid to certain rock and clay,a new acidizing material called nitric powder was developed.When the proportion of nitric acid and hydrochloric acid is 1:3,the mixture will be renamed nitrohydrochloric acid.Nitrohydrochloric acid can dissolve organic material and inanimate matter efficiently,theoretically speaking,this deliquescence may reach 100%，which greatly improved acidizing effect.