SU1308354A1 - Apparatus for suppressing petroleum foam - Google Patents

Abstract

The invention relates to devices for breaking a foam oil. : The aim of the invention is to improve the performance of the device and reduce the metal consumption. The device consists of a supply pipeline, a tubular gas coalescer (THC) 2, parallel plates 3, installed in the first half of the THC with gaps in the overlap 4 and between the coalescer body and the upper ends of the plates 5. Gas-oil flow entering the THC proceeds to the layered motion structure. The gas, foam, and liquid phases, passing through parallel plates, are additionally separated, with the result that in the THC zone, after plates 3, there will be dried gas, destroyed foam, and degassed oil. 1 hp f-ly, 2 ill. $ (L 00 about 00 SAE SP 4 Fig. 2

Description

The invention relates to the oil industry, in particular to the separation of gas oil mixtures.

The purpose of the invention is to increase the productivity and decrease the metal intensity.

FIG. 1 is a flow chart of the proposed device for the destruction of oil in FIG. 2 — section A-A in FIG. K.

The device consists of a supply pipeline 1, a gas tubular coalescer (THC) 2, slopes of parallel plates 3 installed overlapped in height with gaps 4 and 5 in the overlap area and between the housing of the coalescer and the upper ends of the plates, respectively. The plates of the middle part of the cross section of the coalescentor are arranged with an increased pitch. Plates installed in the upper part are corrugated. The frequency of location of the plates is chosen in order to ensure uniform distribution of well production over the cross section and to avoid the possibility of insufficiently treated squalvesin producing in the zones with the least resistance. Based on the fact that the speed of gas-oil flow in a THC is 0.3-0.5 m / s, in order to intensify the gravitational separation of gas and oil, the angle of inclination of the plates is chosen 45 to the vertical, Plastigsh is set in the first half of THC, but no closer 10-15 of its diameter, i.e. 10–15 m from the beginning of THC, since after this mark a stratified flow pattern with gas, oil and foam phases is observed. The length of the sections of the inclined plates is chosen equal to 3 diameters of THC, i.e. 3 m, a further increase in length gives a slight increase in performance. Plates are made of fiberglass AG-4S (can be made of any material that is not corrosive in oil).

The device works as follows. one,

Gas-oil to the mixture comes from the supply pipeline to THC 2. As a result of reducing the speed of the flow to a value of 0.3-0.5 m / s, the flow passes to the exfoliated structure of the movement. In this case, the gas-oil mixture is separated into gas, foam and liquid , Behind

five

five

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However, these phases will hit the parallel plates 3, Corrugated plates are located in the upper part of the THC section. The gas entering the region of the corrugated plates is freed from the dropping liquid contained in it, since, because of changes in the direction of flow, the liquid droplets retain in the corrugated plates. The coarse foam, falling into the same area, quickly collapses, since, being a dry metastable foam, it collapses under insignificant mechanical effects that occur when the foam moves in corrugated plates.

In the lower part of the THC section, there are smooth plates through which the oil passes, containing occluded and metastable gas. With the participation of plates, extraction of occluded and metastable gas occurs more intensively, since they facilitate the removal of gas from under the layer of oil B to the upper part of THC and prevent the formation of gas bubbles through the layer of oil and foam.

In the middle part of the coalescentor section, smooth plates are arranged with an increased pitch. The spacing of the arrangement is due to the fact that the viscosity of the fine foam that passes through this part of the THC is higher than that of the oil. Therefore, in order to avoid the operation of THC only the lower and upper parts and lock the fine foam in the plates, the middle portion of the plates is made with an increased pitch. Foam flow, flow through parallel inclined plates with gas and oil contact between each pair

wetted with oil plates, intensively destroyed, since the most intense and effective destruction of the foam occurs at the border of the foam - gas. The collapse of gas bubbles inside the foam layer does not lead to any noticeable decrease in the volume of foam, but only to the coalescence of gas bubbles. Parallel plates significantly increase the specific surface. Besides; They contribute to the change in surface tension.

In order for the device to work efficiently, separating the gas and oil released from the foam should

ny quickly isolate each other. In the proposed device this contributes to the inclination of the plates. At the same time, the gas moves upwards and to the sides and along the gaps 5, accumulating in the upper 5 part of the THC. Oil flows to the middle and down to the bottom of the THC, the stack through the gaps 4 through the plates, and by mixing the foam in the middle of the THC, it accelerates the coalescence of the gas bubbles and increases their diameter, and at the same time, the flow smoothly oil does not cause additional foaming. Thus, in the THC zone, after parallel plates, there is a largely dry gas, disrupted foam, and degassed oil.

Studies carried out with evenly spaced smooth plates show that the speed of the extension to the central part of the THC is 72.2% of the flow rate in the upper part and 40.6% of the flow rate in the lower part. In the upper part of the THC, coarse foam and gas are advancing at advancing rates, and in the lower part, mainly degassed oil (containing a large number of free occlusal bubbles). In the presence of a layer, foam penetrates and exfoliates the mixture, which leads to an increase in production. .

The feasibility study of the proposed petroleum foam rupture, which allows the THC to be 33% smarter, results in the destruction of the foam and the mixed mixture.

Formula i-zo

1. Device for foam foam, including pipeline and tubular

it is distinguished by the fact that, for the purpose of deductibility, the tubular leasing center is equipped with signs installed in the ladder with gaps in the month between the body of the coalescence with the ends of the plate mounted in the section of the coalescer

gas), whose viscosity is about 0 with increased pitch.

Loaded below the viscosity of a fine foam moving in the central part of the THC.

Editor N. Tupitsa

Compiled by O. Kal Kin

Tehred L. Serdyukova Proofreader M. Pojo

Order 1658/8

Circulation 657 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk .ab. 4/5

Production and printing company, Uzhgorod, st. Project, 4

5 10 5 8354 4

If there are plates along the length of the THC, more intensive foam destruction and separation of the gas-oil mixture occur, which ultimately leads to an increase in the productivity of the device.

The technical and economic advantage of the proposed device for the destruction of petroleum foam is that it allows you to reduce the length of THC by 33%, obtaining a better quality of foam destruction and separation of the gas-oil mixture.

forest center,

Ingenuity formula

Claims (2)

1. A device for breaking oil foam, including a supply pipe and a tubular gas co-separating in that, in order to increase productivity, the tubular gas co-axle is equipped with inclined plates installed overlap in height with gaps in the overlap area and between the coalescer body and the upper the ends of the plates, the plates installed in the middle part of the coalescer section are located 2. A device according to claim 1, characterized in that the upper plates are corrugated. BUT, FIG. /