SU687101A1 - Lubricating addition for drilling muds - Google Patents

Description

(54) LUBRICATING ADAPTER TO DRILLING SOLUTIONS

The invention relates to the drilling of wells, in particular to compositions for drilling wells. Known lubricant additive to drilling muds and crude oil 1 However, this additive is scarce and fire hazardous, characterized by increased wear and tear of rubber parts of drilling equipment due to the presence of gasoline fractions. The need in most cases for the joint introduction of special emulsifiers and lubricant additives complicates the treatment process and increases the cost of drilling mud. The purpose of the invention is the replacement of expensive crude oil, which is a product of the oil industry, with non-refining waste - SNISH (a mixture of oil sludge and sludge); recycling of waste from refineries that occupy useful oil and pollute the atmosphere; ensure compatibility with all chemicals used to treat drilling fluids and reduce the level of fire hazard. This is achieved by using oil refining waste, SNISH, as a lubricant additive to drilling fluids. Figure 1 and 2 shows the results of the following studies, where. 1 - additive SNISh in the base drilling fluid, 2nd addition of 10% refinery waste - SNISH, 3 - drilling fluid with the addition of 20% oil, 4 - drilling fluid with the addition of 3% SMAD-1, 5 drilling fluid with the addition of 30% SNISH . LASH is a dark brown hydrophilic emulsion. Specific weight - 0.84-0.85 g / cm Water content 30-40%. Flash point Pour point: + 24 ° C. Content of mechanical impurities is 8%. The content of the spare parts is up to 20%. The content of paraffins 2 ,. Fractional composition: boiling point 248С; to ZOOs 29% boil up; up to 50%. At temperatures above 24 ° C, the SLISh is very mobile and conditional viscosity in the SPV-5 funnel is not more than 35 s. Under laboratory conditions, SNDS were injected into drilling fluids on an aqueous base of various compositions.

processed by all known chemicals used in the domestic drilling practice.

The research results are summarized in table 1.

As can be seen from Table 1, various additives / SNISH to drilling solutions (fresh mineralized), treated with known chemical reagents, showed their positive effect on almost all parameters of the drilling mud under study.

To determine the anticorrosive properties of the SNISCH, a study was made of flushing fluids containing SNIS, as well as other lubricant additives, on light-alloy drill pipes. The study was carried out in the mill type extractor grinder, EI-2-150 design S.I.Golosova.

As LBT, pieces of drill pipe of the D 16 T brand were used. The additive SNISH in the amount of 30% is almost equivalent to the addition of 3% SMAD-1. .

A study of the fatigue strength of an additive of 3% SMad-1 steel samples, 40 HN drill pipes on an IMING machine of an IMA design showed that adding only 10% of SNISH to drilling fluids reduces corrosive fatigue, the specimen’s durability twice (see FIG. 2},

Thus, the introduction of SNISh in browning solutions of various types practically ensures the achievement of the same effect as from the joint action of crude oil and the CMad-1 enamel additive.

From tab. No. 2, in the process of testing the drainage system, additives to drilling fluids, due to their anti-corrosion and anti-wear properties, increase the penetration rate and mechanical drilling rate. So, at the drilling site. № 19-UK, where in the interval of 2663-3763 m the SNIP was used, the penetration per bit was 6.08 m, the mechanical speed was -Q, 61 m / h.

While at the nearby drilling site No. 16-UK, where as a lubricant (2.pei additives used crude oil, the penetration per bit was 4.67 m, the mechanical speed was 0.54 m / h. per 1 m of penetration amounted to 38.2 kg, and crude oil - 62.8 kg, i.e., oil consumption per 1 m of penetration was almost 2 times more,

When compared with objects where no lubricant additive has been applied, the effect of using SNIS is even greater. This can be seen from the comparison of wells No. 7 and No. 9 of the Kosmach-Pokutskaya area. Thus, the bit penetration through the drilling No. 7-KP increased more than 2 times. The flow rate of SNISH was 44.2 kg / m of penetration. Comparison of wells I 8 and B of the same site, which are drilled with the addition of SNISH and crude oil, also increases the penetration by bit more than 2 times. The mechanical speed of drilling along the rig has also increased. No. 8-KP ,, composed of 0.59 m / h. When comparing wells No. 53 and No. 54 of the area of Vogorodchani-Parishche (BP), which were drilled using SNISH and crude oil, it can be seen that, like on previous sites, when SNISH is used, drilling for the bit also increases 2 times. The flow rate of SNISH for the drilling No. 53-BP was 22.3 kg / m, and the crude oil for the drilling No. 54-BP was 40 kg / m.

The SNISCH from the muddy settlers of oil refineries is delivered to the drilling objects in special barrel machines, pumped out into the tanks and the solution is introduced into the circulating fluid evenly in a quantity of 10-20% over two cycles. If necessary, drilling mud is simultaneously adjusted. SNISH can be introduced into the drilling fluid simultaneously with the necessary chemicals, such as CSSC, which contributes to a better stabilization of the fluid and eliminates foaming. The content of SNISH in the drilling equipment BQpe is controlled on the Dean and Otarka apparatus (or by centrifuging) and, if necessary, a certain amount of them are additionally introduced

Save on the replacement of crude oil with the proposed SLISH supplement in Ivano-Frankivsk Drilling Operations Department alone will amount to 50 thousand rubles a year.

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Claims (1)

1. Podzhers VF, Composition and properties of flushing fluids, M., 1967, p.55-70 (prototype). dZ 0,1,6 vlg 6 8p go to fff Phie.1