Baker Hughes INTEQ, Baker Oil Tool,. Hughes . Baker Hughes Drilling Fluids division, many special chemicals and deals especially with the products of the INTEQ Division. .. time-consuming manual work are relatively expensive. Baker Hughes INTEQ Drilling Engineering Workbook A Distributed Learning B / December Drilling Fluids Workbook H Rev. .. and paragraph references and the following information is included in your transmittal. Department Drilling Engineering Workbook P/N H Manual Date. Geothermal drilling fluids commonly used include water based mud, water only .. dependent on temperature (Baker Hughes INTEQ, ). Drilling fluid.

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Bhi Drilling Fluids Cross References

The proportions of these components based on the total water-based drilling fluid are from about 0. When subjected to differential hydraulic pressure, these ultra-fine particles do not shear or break, but deform and penetrate the hairline fractures and to form an impermeable seal. As noted above, initial experiments indicated that some latex products emulsion polymers produced synergistic effects with an aluminum complex, resulting in improved pore pressure transmission characteristics of the fluids.

It will appreciated that it is impossible to predict in advance what the salt content of a particular saturated brine solution will be since the saturation point depends on a number of factors including, but not limited to the kinds and proportions of the various components of the water-based fluid.

The proportion of the precipitating agent in the drilling mud, based on the total amount of the fluid may range from about 0. Duse of the sodium aluminate and salt only comparative Ex.

EXP Oleamidopropyl betaine surfactant. These attributes include shale inhibition reduced pore pressure transmissioncuttings integrity, high rates-of-penetration, and reduced torque and drag reduction. It is another object of the present invention to provide water-based drilling fluids that reduce the rate of drilling fluid pressure invasion into the borehole wall.


This was explored in the tests with EXP The salt and polymers were then added. It has been discovered that a polymer latex added to a water-based drilling fluid can reduce the rate the drilling fluid pressure invades the borehole wall of a subterranean formation during drilling.

Standard procedure is to circulate the mud about 7 hours followed by static exposure overnight. The first of these polymers was tested on the PPT test in a fluid with other products. Invert emulsion fluids formulated with traditional diesel, mineral or the newer synthetic oils are the highest performing drilling fluids with regard to shale inhibition, borehole stability, and lubricity.

The pressure blockage, reliability, magnitude and pore size that can be blocked are all increased by the latex addition. It would be desirable if compositions and methods could be devised to aid and improve the ability of drilling fluids to simultaneously accomplish these tasks.

Water-based drilling fluids using latex additives – Baker Hughes Incorporated

These tests use a core 25 mm haker diameter and 25 mm long. Inventive drilling fluids provide pore pressure transmission performance closer to oil-based fluids than what is exhibited by current aluminum-based drilling fluids.

Suitable wetting surfactants include, but are not limited to, betaines, alkali metal alkylene acetates, sultaines, ether carboxylates, and mixtures thereof.

INTEQ supplies drilling fluids and both conventional and rotary-based directional drilling systems.

Baker Hughes INTEQ: Drilling Engineering Workbook

When the test started the formation pressure fell from 50 psi kPa to zero, increasing the differential pressure from to psi 1, to 2, kPaas seen in FIG. In carrying out these and other objects of the invention; there is provided, in one form, a water-based drilling fluid including water and a polymer latex capable of providing a deformable latex film or seal on at least a portion of a subterranean formation.


Pressure is plotted versus time. Among the tested samples, EXP hyghes the best compatibility with this latex system. The invention will be further illustrated with respect to the following examples, which are only meant to further illuminate the invention, and not limit it in any way.

The present invention relates to water-based drilling fluids used during petroleum recovery operations, and more particularly relates, in one fluida, to using water-based drilling fluids containing additives to inhibit penetration of the borehole wall by the fluid.

Because of their co-precipitation behavior, deposited particles referencr the shale surface are comprised of lipophilic and hydrophilic components. Likewise, the invasion of water into the shale matrix increases hydration or wetting of the partially dehydrated shale body causing it to soften and to lose its structural strength. As mud filtrate enters the borehole end of the plug, connate water in the shale is displaced into the formation piston.

The differential pressure consolidates the latex deposit into a solid seal. However, circulation was maintained 5 hours instead of one as before.

Drilling Fluids Books

Without latex polymer, the fluid loss of this mud is out of control. Clearly, for successful applications of latex in drilling fluids, latex stability in high salt environments and at elevated temperatures must be improved.

Cement slurries for wells. SA Abbreviation for sodium aluminate. Filming amine corrosion inhibitor for solids free fluids; controls corrosion, scavenges oxygen and inhibits bacteria.