RU1808860C - Lubricating additive for drilling solutions - Google Patents

Abstract

Improving the lubricating properties of the drilling fluid is achieved by using an easily accessible and cheap product to neutralize acidic tar from the production of barium sulfonate additives from petroleum oils by selective cleaning with sludge obtained from the purification of barium sulfide additives in the amount of May 1-2, as a lubricating additive to drilling fluids. hours to May 1. including oil. The lubricant may additionally contain graphite in an amount of May 1. hours to May 1-2. including lubricant additives. 1 s p. f-ly, 5 tab.

Description

The invention relates to the technology of drilling oil and gas wells, in particular to chemical reagents for processing clay solutions.

The purpose of the invention is to increase the lubricating properties of the additive.

This goal is achieved in that the lubricant additive contains, as a waste product of the additive, a neutralization of acidic tar from the production of barium sulfonate additives from petroleum oils of selective purification, with sludge obtained during the purification of barium sulfonate additives, in an amount of May 1-2. hours to one mass part of oil.

The lubricating properties of the drilling fluid were evaluated by the pressure of the film under pressure on a Baroid.

The proposed product, previously diluted with oil at a ratio of 1: 1-2, is added to the drilling fluid in

the amount of 1.5-2.5% of the volume of the circulating mixture.

A study of the effect of the additive on the lubricating properties of the drilling fluid was carried out on chemically treated KSSB (as the most common stabilizer) drilling fluids with a density of 1.8 and 2.0 g / cm3.

In the table. 1 presents the results of studies characterizing the degree of wear of a metal sample.

From the results of the table it can be seen that the proposed additive is effectively carried out. It improves and lubricates the solution, which is characterized by the degree of wear of the metal sample.

Depending on the concentration of the lubricant additive in the clay solution, the proposed lubricant additive 1.12-1.23 times reduces the wear of the metal sample compared with the prototype.

In the table. 2.3 illustrates the effect of the inventive film stress additive under pressure.

As can be seen from the data presented in the table, the proposed lubricant additive in an amount of 1.5-2.5% (depending on the density of the drilling fluid (1.5-2 times higher than the known additives SMAD-1 and oil in efficiency).

In the table. Figure 4 shows the effect of the proposed and known lubricating additives on the properties of a drilling fluid with a density of 1.8 g / cm.

From the table. Figure 4 shows that the change in the technological parameters of drilling fluids upon introduction of the proposed additive is within the range of changes when known additives of oil and SMAD-1 are introduced into the solution without affecting the technological properties.

The economic effect of the use of the proposed additive in comparison with the known additives SMAD-1 and oil was determined by reducing the cost of chemicals and consumables used and reducing the time spent on processing, weighting and leveling the drilling fluid.

In the table. 5 presents the cost calculations for the use of additives.

Based on the price of the consumed additives, it can be established that the cost of the proposed additive in the mixture with oil is almost 3 times less than the cost of the consumption of SMAD-1 and 6 times less than the cost of oil.

The proposed additive is twice as effective as the well-known lubricating additives SMAD-1 and oil in combination with graphite, and its cost is 3 and 6 times lower compared to them (respectively).

In addition, the use of a drilling fluid with the proposed lubricant in comparison with known additives provides the following advantages: the lubricating properties of the drilling fluid are significantly increased; the rheological properties of the solution are improved; the consumption of chemicals and solvents is reduced; the price is slightly reduced.

Thus, in view of all the above, the proposed product can be effectively used as a lubricant additive for drilling fluids.

Claims (2)

1. A lubricant additive to drilling fluids, including oil and waste products for the production of lubricating oils, characterized in that, in order to increase the efficiency of 5 additives, it contains as a waste product the neutralization of acid tar from the production of barium sulfonate additives from selective oils sludge obtained during the purification of barium sulfonate additives, in an amount of May 1-2, including by May 1. including oil. 2. Lubricating additive according to claim 1, with the exception of the fact that it additionally contains graphite in the amount of May 1. hours to May 1-2. including lubricant additives 0 5 0 0 5 Table Comparative data of the proposed and known lubricant additives The effect of the proposed additives on the lubricating properties of the drilling fluid with a density of .1.8 g / cm2 The effect of additives at a drilling fluid density of 2.0 g / cm2 Table 2 Table 3 Table4 The effect of various additives on the properties of drilling mud from bentonite clay treated with KKSSB, weighted barite to a density of 1.8 g / cm3 Calculation of the cost of consumables Table 5