RO116051B1

RO116051B1 - Three-stage horizontal separator

Info

Publication number: RO116051B1
Application number: RO99-00401A
Authority: RO
Inventors: Vasile Cârstocea; Ion Vlad; Constantin Aldescu; Florin Mocănescu
Original assignee: S.C. Comproiect-92 S.A.
Priority date: 1999-04-09
Filing date: 1999-04-09
Publication date: 2000-10-30

Abstract

The invention relates to a a three-stage horizontal separator for separating the mixture trapped from an oil pool by oil production wells in three main stages: gases, proper oil and residual water with solid impurities. The separator comprises a cylindrical tank (1) provided inside, at the ends, with some partition walls (2 and 3) which confine three compartments : one main compartment (b) for the gravitational sedimentation, a second oil compartment (e) and a water compartment (f). In the partition wall (3) a lower hole is made and linked to an adjustable connection (4). Inside the main compartment ( b) a baffle (5) is located, said baffle being provided with some slits (h) for the exit of the gases which are evacuated through a gas retaining device (6) and the liquids being drained through some conduits (9) underneath the oil-layer. The lower sides of the compartments (e and f) at the ends of the cylindrical tank (1) are connected to a counter (10 and 13) each, and to a discharge valve (11 and 14), controlled by a liquid lever controller.

Description

RO 116051 BRO 116051 B

Invenția se referă la un separator orizontal .trifazic, pentru separarea amestecului captat din zăcământ de sondele de exploatare a țițeiului brut, în trei faze principale: gaze, țițeiul propriu-zis si apa reziduală ce conține și impurități solide.The invention refers to a three-phase horizontal separator, for separating the mixture captured from the deposit by the crude oil exploitation wells, into three main phases: gases, the actual crude oil and the residual water that also contains solid impurities.

Este cunoscut un separator orizontal, trifazic, alcătuit dintr-un recipient cilindric orizontal, în care amestecul de fluide - apă brută, țiței, produse petroliere sau grăsimi - este introdus printr-o conductă la partea superioară la care este racordată o cameră de distribuție încărcată cu un material de coalescență, de exemplu cărbune. Amestecul de fluide pătrunde, cu viteză redusă, într-un spațiu de separare gravitațională.A horizontal, three-phase separator is known, consisting of a horizontal cylindrical container, in which the mixture of fluids - raw water, crude oil, petroleum products or fats - is introduced through a pipe at the top to which a charged distribution chamber is connected with a coalescing material, eg coal. The fluid mixture enters, at reduced speed, into a gravity separation space.

□ conductă de preaplin asigură evacuarea particulelor mai ușoare, care se acumulează la suprafața lichidului din separator. Apa decantată este evacuată pe la partea inferioară a recipientului cilindric prin niște țevi perforate, dispuse orizontal la fundul recipientului și racordate la un colector vertical, dispus în exteriorul recipientului cilindric și pus în legătură cu atmosfera la cota sa cea mai înaltă.□ overflow pipe ensures the evacuation of lighter particles, which accumulate on the surface of the liquid in the separator. The decanted water is discharged to the lower part of the cylindrical container through some perforated pipes, arranged horizontally at the bottom of the container and connected to a vertical collector, arranged outside the cylindrical container and connected to the atmosphere at its highest level.

Separatorul orizontal trifazic, conform invenției, este alcătuit dintr-un recipient cilindric orizontal, echipat la interior, aproape de capete, cu un paravan despărțitor ce are și rol de deversor și cu un paravan despărțitor prevăzut cu un orificiu inferior legat la un racord reglabil, astfel încât paravanele despărțitoare împart interiorul recipientului cilindric în trei compartimente distincte, dintre care un compartiment principal, din mijloc, care ocupă cea mai mare parte din recipientul cilindric și unde amestecul de țiței, bule de gaze și apă se decantează prin sedimentare gravitațională, un al doilea compartiment pentru țiței, unde deversează pelicula de țiței din compartimentul principal, și un al treilea compartiment pentru apă, în care trece apa reziduală din compartimentul principal prin orificiul inferior și prin racordul reglabil, pe principiul vaselor comunicante, fluidul provenit de la sondele de exploatare pătrunzând în recipientul cilindric printr-un deflector în care gazele sunt separate grosier de lichide, gazele trecând prin niște fante practicate în partea superioară a deflectorului, printr-un reținător de ceață în exterior, printr-un contor de gaze și un retroregulator de presiune spre coloana de recuperat gazele, lichidele acumulate în deflector se scurg prin niște conducte sub stratul de țiței, iar țițeiul acumulat în compartimentul de țiței este evacuat printr-o ieșire, trece printr-un contor de lichide și printr-un robinet de evacuare comandat de un regulator de nivel ce menține nivelul țițeiului între anumite limite, apa reziduală din compartimentul de apă este evacuată printr-o ieșire, trece printr-un contor de apă și printr-un robinet de evacuare ce este comandat de un regulator de nivel care menține nivelul apei reziduale între anumite limite, eliminarea impurităților solide, cât și golirea recipientului cilindric, făcându-se printr-o ieșire și un robinet de evacuare.The three-phase horizontal separator, according to the invention, consists of a horizontal cylindrical container, equipped on the inside, near the ends, with a dividing wall that also has the role of a spillway and with a dividing wall provided with a lower hole connected to an adjustable connection, so that the partition walls divide the interior of the cylindrical container into three distinct compartments, of which a main compartment, in the middle, which occupies most of the cylindrical container and where the mixture of crude oil, gas bubbles and water settles by gravity settling, a the second compartment for crude oil, where the film of crude oil from the main compartment discharges, and a third compartment for water, in which the residual water from the main compartment passes through the lower hole and through the adjustable connection, on the principle of communicating vessels, the fluid from the exploitation wells entering the cylindrical container through a baffle in which the gases are roughly separated from the liquids, the gases passing through some slits made in the upper part of the deflector, through a fog retainer on the outside, through a gas meter and a pressure retroregulator to the column to recover the gases, the liquids accumulated in the deflector are drain through some pipes below the crude oil layer, and the crude oil accumulated in the crude oil compartment is discharged through an outlet, passes through a liquid meter and through a discharge valve controlled by a level regulator that maintains the level of crude oil within certain limits , the waste water from the water compartment is discharged through an outlet, passes through a water meter and through a drain valve that is controlled by a level regulator that maintains the level of the waste water within certain limits, the removal of solid impurities, as and emptying the cylindrical container through an outlet and an exhaust valve.

Prin aplicarea invenției se obțin următoarele avantaje:By applying the invention, the following advantages are obtained:

- creșterea eficienței, mai ales când sunt volume mari de fluide, cu conținut ridicat de apă, cu diferențe mari de densitate între țiței și apă;- increasing efficiency, especially when there are large volumes of fluids, with high water content, with large differences in density between crude oil and water;

- mărirea capacității de sedimentare gravitațională;- increasing the gravity sedimentation capacity;

- obținerea unei separări corespunzătoare a gazelor, a țițeiului propriu-zis și apei reziduale cu impurități;- achieving a proper separation of gases, crude oil itself and residual water with impurities;

- construcție simplă, sigură și ușor de întreținut în exploatare;- simple construction, safe and easy to maintain in operation;

- permite separarea, în condiții bune și în mod automat, a lichidelor cu densități diferite, necesitând un singur reglaj.- allows the separation, in good conditions and automatically, of liquids with different densities, requiring only one adjustment.

Claims

RO 116051 B

Next, an example of the invention is given, in connection with the figure, which represents a longitudinal section through a three-phase horizontal separator.

The three-phase horizontal separator, according to the invention, is composed of a cylindrical container 1, horizontal, equipped inside, at one end, with a partition screen 2, with the role of an overflow, and at the other end, with a partition screen 3, provided with a 50 hole a and an adjustable connection 4, thus creating three distinct compartments: a main compartment b, where the mixture of crude oil, gas and water is separated by gravitational sedimentation forming interface c, between gas and crude oil and interface d , between crude oil and residual water, a second compartment e, for crude oil, where the film of crude oil from the main compartment b discharges, and a compartment f for water, into 55 which passes the decanted water from the main compartment b, through the hole a and the adjustable connection 4, on the principle of communicating vessels. The fluid formed by the mixture of crude oil, gas and water with impurities, coming from the oil wells, enters the cylindrical container 1 through an inlet g and through a deflector 5, which, by changing the direction of the flow of the mixture, coarsely separates the gases from liquid (crude oil and water). The gases exit 60 the deflector 5 through some slots h, made in the upper part of its housing, pass through a mist retainer 6, through an exit i from the cylindrical container 1, through a counter 7 and through a pressure retroregulator 8 towards the gas recovery column, not shown. The liquids in the deflector 5 drain into the lower part of the main compartment b, under the crude oil film, through some pipes 9, on the principle of communicating vessels 65. The crude oil in the compartment e of the cylindrical container 1 is discharged through an outlet j, passes through a liquid meter 10 and through a discharge valve 11 which is controlled by a level regulator 12 which maintains the level of crude oil between certain limits. The residual water from the water compartment f, of the cylindrical container 1, is discharged through another outlet k, passes through a liquid meter 13 and through a 7 o discharge valve 14 controlled by a level regulator 15, which maintains the residual water level between certain limits. The removal of impurities in the solid state, as well as the emptying of the cylindrical container 1, is carried out through an outlet I when the outlet valve 16 is opened. An inspection port 17 also serves to adjust the connection 4 to a height imposed by the levels of the interfaces c and d ce it also determines the thickness 75 of the crude oil film that must discharge into the crude oil compartment e. The cylindrical container 1 is equipped with pressure gauges 18 and safety valves 19.

Claim

Horizontal, three-phase separator, intended for the separation of fluids in the mixture from oil wells, at a determined temperature, pressure and specific gravity, characterized by the fact that it consists of a cylindrical container (1], horizontal, equipped inside, close to the ends , with a partition wall (2) that also has a spillway role and with a partition wall (3) provided with a lower hole (a) connected 85 to an adjustable connection (4), so that the partition walls (1 and 3] divide the interior cylindrical container (1) into three distinct compartments, of which a main compartment (b), in the middle, which occupies most of the cylindrical container [1] and where the mixture of crude oil, gas bubbles and water is settled by sedimentation

RO 116051 B gravity, a second compartment (e), for crude oil, where the film of crude oil from the main compartment (b) discharges, and a third compartment (f] for water, in which the residual water from the main compartment (b) passes through the lower hole [a] and through the adjustable connection (4), on the principle of communicating vessels, the fluid from the exploitation wells entering the cylindrical container [1] through a deflector (5) in which the gases are roughly separated from the liquids, the gases passing through some slots (h) made in the upper part of the deflector (5), through a fog retainer (6), outside, through a gas meter (7) and a pressure retroregulator (8) to the column of recovered the gases, the liquids accumulated in the deflector (5) drain through some pipes [9] under the crude oil layer, and the crude oil accumulated in the crude oil compartment is discharged through an outlet [j], passes through a liquid counter (10) and through an exhaust valve (11] controlled by u n the level regulator (12), which maintains the crude oil level between certain limits, the residual water from the water compartment (f) is discharged through an outlet, passes through a water meter (13) and through a drain valve [ 14] which is controlled by a level regulator (15], which maintains the residual water level between certain limits, the elimination of solid impurities, as well as the emptying of the cylindrical container (1], by means of an outlet [I] and an exhaust valve ( 16).

The president of the examination committee: Eng. Eane Adrian

Examiner: engineer Gurzău loan