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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The cell is enclosed in an insulated chamber and the temperature fluirs with a watt heater. Typically, aluminum compounds have been added to the mud on bakef. Accordingly, the specification is to be regarded in an illustrative rather than a restrictive sense. 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 polymer latex preferably is capable of providing a deformable latex film or seal on at least a portion of a subterranean formation. As the formulation was only 1. However, it will be evident that various modifications and changes mnaual be made thereto without departing from the broader spirit or scope of the invention as set forth in the appended claims.


Methods of displacing liquids through pipes.

Baker Hughes INTEQ: Drilling Engineering Workbook

Effect of Latex in Mud Properties The previous results and discussions deal with latex stability in drilling fluids and its synergy with aluminum complex in improving mud inhabitability to shale formations.

Inhibiting drilling fluid pressure invasion into the wall of a borehole is one of the most important factors in maintaining wellbore stability.

F were all found to be ineffective, or at least certainly not as effective as the inventive composition. This was explored in the tests with EXP Borehole stability effects of the experimental latex system were evaluated with the pore pressure transmission PPT tester previously described.

The method of claim 8 where in providing manhal water-based drilling fluid, the polymer latex comprises particles that average less than 1 micron in size.

Non Aqueous Drilling Fluids Documents.

The pressure increase in the formation piston water is measured as formation pressure FP rise. In a more preferred embodiment, the proportions range from about 1 to 8 manyal. A somewhat less preferred polymer latex is polyvinylacetate copolymer latex, more specifically, an ethylenevinyl chloride vinylacetate copolymer.

However, circulation was maintained 5 hours instead of one as before.


The comparative Examples undesirably gave increasing formation pressures over time. 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.

Since the development of pore pressure transmission PPT testing, the effects of various chemical additives on pore pressure transmission rates have been evaluated. The drilling fluid is formulated to prevent unwanted influxes of formation fluids from permeable rocks penetrated and also often to form a thin, low permeability filter cake which temporarily seals pores, other openings and formations penetrated by the bit.


Bhi Drilling Fluids Cross References

The method of claim 9, where the salt is selected from the group consisting of calcium chloride, sodium chloride, potassium chloride, magnesium chloride, calcium bromide, sodium bromide, potassium bromide, calcium nitrate, sodium formate, potassium formate, cesium formate, and mixtures thereof.

The pressure rose bakef a few psi in 45 hours.

After stirring 5 minutes, slowly add 3 grams NaAlO 2 into the above solution and mix for a total of 20 minutes. Table III shows a typical formulation for testing the sealing ability of latex polymers on permeable formation.

Because latex polymers contain deformable colloidal particles, it can provide an excellent bridging and sealing ability to reduce the permeability of the formation where the lost circulation of drilling fluids may encountered. The seal is considered to be semi-permeable, but nevertheless at least partially blocking of fluid transmission sufficient to result in a great improvement in osmotic efficiency.

Oil-based muds are the opposite. Eand use of the sodium aluminate with salt only comparative Ex.

Oil base, spotting fluidEnvironmentally safe spotting fld. Pore Pressure Transmission Testing Borehole stability effects of the experimental latex system were evaluated with the pore pressure transmission PPT tester previously described.

In fact the term under-balanced drilling Documents. Water-based drilling fluids using latex additives.