SU1116044A1 - Reagent for processing potassium drilling mud - Google Patents

Abstract

1. REAGENT FOR TREATING KALIUM DRILLING SOLUTIONS containing alcohols, characterized in that, in order to improve the structural and mechanical properties of potassium drilling fluids, the reagent contains alcohols phenol alcohol and additionally contains bottoms monoethanolamine in the following ratio of ingredients, K: Phenol alcohol. 40-60 cubic monoethanolamine residues - 40-60 2. Reagent according to claim 1, characterized in that it contains phenol alcohol according to TU6-05-1164-72. 3. The reagent according to claim 1, characterized in that it contains bottoms residues of manoethanolamine g according to TU6-02-18-8-74.

Description

F

The invention relates to the treatment of drilling fluids used in the drilling of wells in oil, gas and gas condensate fields, in particular to the compositions of chemical reagents used for the treatment of potassium drilling fluids. The known structure-forming additive to drilling muds, saturated with salt, is a waste resulting from the dewaxing of Smad oils f1}. The disadvantage of this structure-forming agent is that at pH 8.5 it is saponified and loses its structure-forming properties. A known reagent for treating potassium drilling fluids containing alcohols 2. However, T-66 has a low structure-forming ability and, in addition, it requires significant consumption for its structure formation. The aim of the invention is to improve the structural and mechanical properties of potassium drilling mud. The goal is achieved by the fact that the reagent for treating potassium drilling muds containing alcohol contains alcohol as phenolic alcohol and additionally bottoms of monoethanolamine in the following ratio of ingredients,% by volume: Phenolosprit 40-60 Dab of monoethanolamine 40-60 V reagent contains phenolospic according to TU6-05-1164-72, and the bottoms of monoethanolamine TU6-02-18-8 74. The composition of the bottoms of monoethanolamine: monoethanolamine 40-55%, K- (2-hydroxyethyl) -ethshidenediamine Z1, vi njinjif J vfof OXOZOLIDON 2-0,1-1%, 1- (2-hydroxyethyl imidase lin-2-0.1-0.3% unidentified organic matter 16.7%, water - the rest.Technical phenol-alcohol is produced according to TU6-05-1164-72. Example: A potassium solution is taken from the well 9 2 Smushkovska Arshensk NRE, containing in terms of 1 m / kg: - bentonite clay 72, potassium chloride 57, KSCB 40; CMC 4.2 potassium hydroxide 3.6. The solution had the following operational parameters: specific gravity 1.27 g / cm 3 , viscosity 37 s. according to SPV-5, water loss 5.5 cm in 30 minutes in VM-6, static shear stress in 1 and 10 minutes in sleep 6/24 mg / cm in CHC-2, filter ionic cake 1 mm. Physico-chemical indicators of the composition of the filtrate: specific gravity 1.035 g / cm, pH 8.5, total hardness 250 mEq / l, containing calcium ions 0.43%, magnesium 0.046%, chlorine 4.26%, content of potassium chloride (KQt) 4.2%. The sample solution was divided into 2 parts. A known reagent T-66 was introduced into one in a non-dissolving amount. In tab. Figure 1 shows the values of the structural-mechanical (snee) parameters of the solution, the water yield and the content of potassium chloride in the filter of the solution, depending on the addition of T-66. The second part of the potassium solution was injected with a reagent consisting of phenolic alcohol and bottoms of non-ethanolamine in a 1: 1 ratio. The results of measuring the parameters of the potassium solution from the reagent additives are summarized in Table. 2. In table. 3 shows the rationale for the boundary values of the additive components. The test (Tables 1-3) showed that the reagent, consisting of phenol alcohol and distillation residues of monoethanolamine, has a higher structure-forming ability compared with the known T-66. At the same time, the decrease in fluid loss of the solution from additives of both the known and the reagent according to the invention remains at the same level. Some drop in the concentration of potassium chloride in the filtrate of drilling ivi. j liquid D iiirui Dipaic jyt / VDV solution is explained by the general increase in the concentration of the liquid phase in the solution from the reagent additives. The order of introducing reagents into the drilling fluid is the same as other liquid chemical reagents — 5-7% (by volume of the solution) of the composition according to the invention is added to the circulating drilling fluid evenly throughout the cycle.

Table 1

6/24

About 1 2 3 4 5 6 7

12/32

17/42

21/54

26/60

33/74

39/80

42/96

table 2

5.5

4.2

5.3

4.0

5.1

4.8

3.8

Claims (3)

1. REAGENT FOR THE PROCESSING OF POTASSIUM DRILLING FLUIDS, containing alcohols, characterized in that, in order to improve the structural and mechanical properties of potassium drilling fluids, the reagent contains phenolalcohol as alcohols and additionally contains bottoms 40-60 residues of monoethanolamine in the following ratio of ingredients, vol.%: Phenol alcohol. Kubre residues of monoethanolamine 2. The reagent according to π. 1, with the fact that phenol-alcohol according to TU6-05-1164-72 is absorbed. 3. The reagent according to π. 1, from the fact that the residues of monoethanolamine are harvested in it according to TU6-02-18-8-74. about t him 40-60 licha soderlicha 'content -