RU2000112432A - Casing Cementing Device - Google Patents
Casing Cementing DeviceInfo
- Publication number
- RU2000112432A RU2000112432A RU2000112432/03A RU2000112432A RU2000112432A RU 2000112432 A RU2000112432 A RU 2000112432A RU 2000112432/03 A RU2000112432/03 A RU 2000112432/03A RU 2000112432 A RU2000112432 A RU 2000112432A RU 2000112432 A RU2000112432 A RU 2000112432A
- Authority
- RU
- Russia
- Prior art keywords
- conical
- elastic
- tip
- casing
- groove
- Prior art date
Links
- 230000023298 conjugation with cellular fusion Effects 0.000 claims 2
- 230000013011 mating Effects 0.000 claims 2
- 230000021037 unidirectional conjugation Effects 0.000 claims 2
- 210000001503 Joints Anatomy 0.000 claims 1
- 238000005296 abrasive Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 claims 1
- 231100000817 safety factor Toxicity 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
Claims (1)
l = nb + к,
где l - длина наружной вертикальной конической части эластичной манжеты, мм;
n - количество стыков обсадных труб, которые проходит каждая эластичная манжета в абразивном буровом и тампонажном растворах, шт. ;
b - величина износа каждой наружной вертикальной конической части эластичной манжеты, мм;
к - коэффициент запаса, равный 1,0 - 1,5,
а общую длину сборных эластичных манжет, контактирующих с обсадной трубой, без учета внешней конической высоты нижней эластичной манжеты определяют по формуле
L= 1,1 D,
где L - общая длина сборных эластичных манжет, контактирующих с обсадной трубой без учета внешней конической высоты нижней эластичной манжеты, мм;
D - наружный диаметр обсадной трубы, мм,
причем стоп-кольцо дополнительно снабжено средней цилиндрической внутренней проточкой, диаметр которой меньше диаметра нижней цилиндрической внутренней проточки, а наконечник цементировочной пробки в цилиндрической части дополнительно снабжен проточкой, в которой установлено разрезное пружинное кольцо, причем его наружная нижняя часть выполнена под углом 25 - 30o относительно верхней поверхности посадочного конуса наконечника, входящее в ответную нижнюю цилиндрическую внутреннюю проточку стоп-кольца, а верхняя внутренняя коническая проточка стоп-кольца выполнена под углом 25 - 30o.A device for cementing a casing string containing a cementing plug including a rigid core, on which elastic cuffs and a tip are fixed, provided with a seating cone in the upper part in contact with the upper conical inner flow stop ring, in the cylindrical part with a groove in which the sealing ring is installed wherein the lower part of the tip is made conical, and a stop ring having an upper conical and lower cylindrical inner grooves, characterized in that each element of the elastic cuff is made separate, having protrusions and mating grooves in the lower and upper cylindrical parts, respectively, and the lower and upper elastic cuffs have similar connections with the upper surface of the landing cone of the tip and the flange, respectively, and the length of the outer vertical conical part of the elastic cuff is determined by the formula
l = nb + k,
where l is the length of the outer vertical conical part of the elastic cuff, mm;
n is the number of joints of casing pipes that each elastic collar passes in abrasive drilling and grouting solutions, pcs. ;
b - the amount of wear of each outer vertical conical part of the elastic cuff, mm;
k - safety factor equal to 1.0 - 1.5,
and the total length of prefabricated elastic cuffs in contact with the casing, without taking into account the external conical height of the lower elastic cuff, is determined by the formula
L = 1.1 D,
where L is the total length of prefabricated elastic cuffs in contact with the casing without taking into account the external conical height of the lower elastic cuff, mm;
D is the outer diameter of the casing, mm,
moreover, the stop ring is additionally equipped with a middle cylindrical inner groove, the diameter of which is smaller than the diameter of the lower cylindrical inner groove, and the tip of the cementing plug in the cylindrical part is additionally equipped with a groove in which a split spring ring is installed, and its outer lower part is made at an angle of 25 - 30 o relative to the upper surface of the landing cone of the tip, included in the mating lower cylindrical inner groove of the stop ring, and the upper inner conical stop-ring groove is formed at an angle of 25 - 30 o.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2000112432/03A RU2183723C2 (en) | 2000-05-17 | 2000-05-17 | Device for casing string cementing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2000112432/03A RU2183723C2 (en) | 2000-05-17 | 2000-05-17 | Device for casing string cementing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2000112432A true RU2000112432A (en) | 2002-03-10 |
| RU2183723C2 RU2183723C2 (en) | 2002-06-20 |
Family
ID=20234792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2000112432/03A RU2183723C2 (en) | 2000-05-17 | 2000-05-17 | Device for casing string cementing |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2183723C2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2526044C1 (en) * | 2013-06-11 | 2014-08-20 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Device for well cement bridging |
| CN104481453B (en) * | 2014-12-11 | 2017-09-01 | 中国石油天然气股份有限公司 | Combined self-locking type reducing rubber plug |
| RU2684626C1 (en) * | 2018-05-30 | 2019-04-10 | Публичное акционерное общество "Татнефть" имени В.Д. Шашина | Sectional separating plugs for cementing of stepped casing strings |
| RU2696039C1 (en) * | 2018-11-19 | 2019-07-30 | Закрытое акционерное общество "ПРОММАШСЕРВИС" | Cementing device for wells |
| CN114109302A (en) * | 2021-11-24 | 2022-03-01 | 中石化石油工程技术服务有限公司 | Permeable composite rubber plug for well cementation and use method |
-
2000
- 2000-05-17 RU RU2000112432/03A patent/RU2183723C2/en not_active IP Right Cessation
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