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Biodiesel drilling fluid lubricant and preparation method thereof

A drilling lubricant and biodiesel technology, applied in chemical instruments and methods, drilling compositions, etc., to achieve great application potential, ensure stability, and good dispersion

Inactive Publication Date: 2012-03-28
山东华阳油业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, the technical problem to be solved by the present invention is that the lubricant suitable for water-based drilling fluid in the prior art cannot meet the problems of easy degradation and good lubricating performance at the same time, and a kind of lubricating performance is provided, which is environmentally friendly and easy to degrade. Inexpensive Biodiesel Drilling Fluid Lubricant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 100mL of biodiesel, 10g of emulsifier and 6g of defoamer to 120mL of water, stir evenly at high speed, and wait until all components are fully emulsified to obtain the required biodiesel drilling fluid lubricant.

[0042] According to the China National Petroleum Corporation enterprise standard Q / CNPC 88-2003 "Technical Requirements for Liquid Lubricants for Drilling Fluids", add 2% (per 100mL base slurry 5g bentonite, the same below) to 5% base slurry Adding 2g of the lubricant described above, the same below) to the biodiesel drilling fluid lubricant prepared above, the measured reduction rate of the friction coefficient of the drilling fluid is 82.86%, which is much higher than the ≥ 65% required by the standard.

[0043] It shows that the lubricating performance of the biodiesel drilling fluid lubricant described in the present invention is good.

Embodiment 2

[0045] Add 100mL of biodiesel, 10g of emulsifier and 6g of defoamer to 120mL of water, stir evenly at high speed, and wait until all components are fully emulsified to obtain the required biodiesel drilling fluid lubricant.

[0046]According to the test method recorded in China National Petroleum Corporation's enterprise standard Q / CNPC 88-2003 "Technical Requirements for Liquid Lubricants for Drilling Fluids", add 0.5% (Add 0.5g of the lubricant per 100mL base slurry) The biodiesel drilling fluid lubricant prepared above has a measured friction coefficient reduction rate of 72.1%, which is higher than ≥ 65% required by the standard.

[0047] The test data of embodiment 2 shows that when the biodiesel drilling fluid lubricant of the present invention is used in water-based drilling fluid, it only needs a small amount of addition and can reach the requirement specified in the "Technical Requirements for Liquid Lubricants for Drilling Fluids". The performance requirement that th...

Embodiment 3

[0049] Add 100mL of fatty acid methyl ester biodiesel, 6g of emulsifier, and 2g of polyol phosphate defoamer to 80mL of water, stir evenly at high speed, and wait until all components are fully emulsified to obtain the required biodiesel drilling fluid lubricant, wherein The emulsifier is composed of Sipan-85 and sodium oleate in a ratio of 1:1 by weight.

[0050] According to the China National Petroleum Corporation enterprise standard Q / CNPC 88-2003 "Technical Requirements for Liquid Lubricants for Drilling Fluid", add 1% of the biodiesel drilling fluid lubricant prepared above to 5% base slurry, and then add 4% NaCl A saltwater environment is formed, and the reduction rate of the friction coefficient of the drilling fluid before and after the addition is measured to be 81.32%, which is much higher than the ≥65% required by the standard.

[0051] It shows that the biodiesel drilling fluid lubricant of the present invention has good lubricating performance in brine drilling f...

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Abstract

The invention belongs to the field of oilfield chemistry, and in particular relates to a lubricant based on biodiesel and applied to a water-based drilling fluid and a preparation method thereof. The biodiesel drilling fluid lubricant comprises biodiesel; and 80 to 120 milliliters of water, 4 to 10 grams of emulsifier and 2 to 6 grams of defoaming agent are added into every 100 milliliters of biodiesel. The biodiesel is used for substituting white oil and diesel oil and researched into the biodiesel drilling fluid lubricant suitable for the water-based drilling fluid; and the biodiesel drilling fluid lubricant has similar lubricating performance as an oil-based lubricant and can be perfectly dissolved with the water of the drilling fluid, and the whole system has good dispersity.

Description

technical field [0001] The invention belongs to the field of oilfield chemistry, and in particular relates to a biodiesel-based lubricant suitable for water-based drilling fluid and a preparation method thereof. Background technique [0002] Drilling fluid is the circulating medium used in the drilling process. Drilling fluid mainly completes the tasks of suspension, pressure control, formation stability, buoyancy, lubrication and cooling during the drilling process. Drilling fluid has the functions of: cleaning the bottom of the well, carrying cuttings; cooling and lubricating the drill bit and drill string; balancing the lateral pressure of the well wall rock, sealing and stabilizing the well wall; balancing the formation pressure; Cuttings; effectively transmit hydraulic power; bear part of the gravity of the drill pipe and casing; provide a large amount of data on the drilled formation; break rocks through hydraulic and other important functions. [0003] With the rapi...

Claims

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Application Information

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IPC IPC(8): C09K8/035
Inventor 孙明波林殷平商红岩薛真真
Owner 山东华阳油业有限公司
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