SU89951A1 - Mobile base for deep sea oil drilling - Google Patents

Description

Proposed

iis: .yul: tsuk base for deep drilling of oil iv- :: el; ",; more than the improvement of wells compared to them; : szidzkelstvie te 70346. described in the author k. ;;

Known -: -, - :. i-:;: a:; all mobile bases, including

:::; / 10 fisvopcKOMj The certificate No. 70346 is equipped with a mobile o - ::, /; -: - lie with high resilience. auxiliaryin: ::: 1

Op 01; Kyl; -c -; - ::;,:, :: i; 3od; jRtempo eliminates this disadvantage by the fact that .... pontoons can be distinguished from cylindrical pontoons

that JXaTSlf GS;., j..Ofl f Ci o3iib x are located along the entire base,

KZ 1utornh TWO.; -;.:: -; and chotfee or more. .is. additional pontoons are located perpen:, 0 |.: ;; m., while the longitudinal pontoons are made plunge;: st p11o ..- .; : G 1: -Tail | b: e pontoons after the installation of the entire base of the Kouoe type, and l; go: ooHGBriv.ie and are used as clay tanks;,;: ----- c-v-: ratvor yl-:

gr. - -, .- WITH-:-; ; e OvTuob.Hux and additional pontoons, far

1c1-, and ;;:, ;;; and

lO :; and iicrir: the river axes of the structure allows for

the moment of inertia of the waterline area n provides better stability

Immersion of the main pontoons is carried out along guide ropes that are passed through the clutches of the pontoons and fixed at one end to the upper part of the column, and at the other to the body of the lower base s, the lifting of additional pontoons to the upper base is carried out by turning them around the axis of the above-mentioned cross section .

In order to reduce the total height of the underwater part, in order to reduce the wave pressure on the structure, the main pontoons are placed into special grooves on the bottom base housing 9.

The interposition of the main and additional pontoons in height is such that the final draft of the main corresponds to the initial draft of the additional pontoons.

Fig. 1 shows a general end view of the base, Fig. 2 shows the layout of the auxiliary pontoons, Fig. The moment of immersion of the main pontoons and Fig. - the moment of turning additional pontoons.

Two main cylindrical pontoons I are located along the longitudinal axis of the structure behind the supporting columns of the lower base. Four additional cylindrical pontoons 2 are perpendicular to the main pontoons, i.e. along the transverse axis of the structure (Fig. 2).

The immersion of the two main cylindrical pontoons takes place along two pairs of guide ropes 3, which are pulled up by the bottom base hull and the top of the columns and pass through two beams in each pontoon.

The main pontoons are not bound by each other and each can be submerged independently of the other, which creates convenience in the operations of fastening the upper base.

Prior to its immersion, the pontoons support the upper base through special trusses 5, which are located two on each side.

For reliability, in addition to the guide ropes, two insurance ropes 6 are provided, which go around the main pontoons and attach the attachment 2 -89951

- 3 -8995Г

They go to the bottom of the base and to the top of the column.

In order to prevent the cylindrical pontoons from tilting in the transverse direction, when they are submerged on the bottom of them, solid ballast is placed so that the center of gravity of the main pontoons is lower than the center of magnitude.

In the case of the lower base, special recesses for main cylindrical pontoons are provided on each side, in which main pontoons are mounted on special supporting bars and (Fig. 3).

Due to the presence of recesses in the housing, the overall height of the underwater part is reduced, as a result of which the wave pressure on the underwater part decreases. The cylindrical shape of the submerged pontoons increases the streamlining of the underwater part.

The rise of four additional pontoons 2 to the upper base or the waterway is carried out by rotating them relative to the axis located perpendicular to the longitudinal axis of the pontoon body (Fig.).

Axis 7 is attached to the body of the additional pontoon at some distance from the center of the cross section and the axle pin are located in bearings attached to the trusses of the upper base.

The rotation of the additional pontoon around the axis for lifting or descending is performed by pulling the rope 8 attached to the pontoon body to the appropriate place, so that a moment is created around the axis.

The rope is tensioned to be tangled up and winding its end onto the coil or winch drum located at the stern and bow hour-nx upper base.

SUBJECT OF INVENTION

I. Mobile base for deep drilling of oil squacit on the sea according to the author's certificate No. 70346, which is different there- .. With a system of auxiliary pontoons consists of cylindrical pontoons, of which two or more main pontoons are located along the base, and four or more small additional The pontoons are located perpendicularly to the main pontoons, and the longitudinal pontoons are made of a submersible type, and the additional pontoons, after the iiCero PLLT is installed, are ",: SH podp ;; .-:; ..

auugs as eno u; vij, v; , -. . .. -;

and, Forkg b; :; iO ;; aii; iiiH sex ,,.:;:; ;; :, /

iiOrpySGHHe nOHV / OilOii IIpOlinBOiii J -f- :::: .. PrOpuschank ChVrZP KLVZN POSCHISCHNO:: :: Chr p-iDum -; parts of the column alo / hag; -; g; ic:; -: viTv; /:; er- :::

LOPOLNELSH - -: LOATONO-: IrJ,. ;;; ;. nn Lijai; ) DISCUSSION. them around ao;:. JUCnD ;; o-; j :: ;;;) ii h: ;; /::

qi them

J, Fsr ;;; and the YOTFJO: VJ;: L.:. :: -;.:,. under the legal aid, OOBOIJ; :; } ac goyo-: 1hch:; l - :: li-niOne ocHOiiaHHH with petsialiyu:; tgg g: ;;: go :: ij ..:. total height; Podzg, Chr.S:; -; for iSi fiiM- HEi coopviseiiue.

t. Foema ij;:;:, ic ;;; c; R; i); and;; P. ; interaction with oo.po :::; ; : k "(-lo. f:;:. i: -jx .c: that is the CjHniixa; ./- -; TeirbHL} :: iiOiaiOllO-;

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