
隨著中東地區油氣開發深度不斷增加,油藏越來越復雜,油氣開發工作面臨著更多的挑戰。同時,油氣井的全生命周期開發急需新的技術突破。
如何保持油層和隔層的完整性,對操作人員和鉆井承包商來說是一件非常令人頭疼的事情。沖洗液腐蝕井眼或固井不到位都可能破壞隔層的完整性,進而影響油氣井的正常生產。如今,像高壓高溫井和頁巖油井這樣的高風險井,問題出現頻率高達90%。石油圈原創www.h29736.cn
為解決以上問題,同時兼顧石油開發的經濟性,Meta公司開發了一系列低成本、高性能的封隔器:MorphPackers系列封隔器。
MorphPacker永久式封隔器
傳統封隔器需組裝超過20個零部件,密封原理十分復雜,需多級內部密封、內螺紋、多級運動部件、復雜元件和剪切螺絲等多方面緊密配合,才能實現完美工作。
MorphPacker永久式封隔器是一款套管井生產封隔器,也可用作襯管頂部封隔,固定于未膠結井眼內,同時也可用于地熱井完井和高壓高溫完井。
MorphPacker永久式封隔器完全打破了常規封隔器的設計理念。憑借Meta公司的金屬形態技術專利,V0級封隔器僅需7個組件,且不包含可運動的零件和內部密封。該封隔器能夠在井下變形,貼合井身。全通徑設計使得MorphPacker永久式封隔器成為一款可靠、高端切性價比極高的產品。
MorphPacker永久式封隔器不僅成本更低,而且可靠性更高。與其他封隔器相比,MorphPacker永久式封隔器的安裝更加方便快捷,節省了鉆井的時間和成本。另外,它在操作上可實現多個產品的功能,減少了鉆井初期設備的數量,簡化了供應鏈。石油圈原創www.h29736.cn
MorphPacker層位分離封隔器
MorphPacker層位分離封隔器主要為裸眼井隔離提供解決方案,能夠在裸眼井的全生命周期內起到層位分離作用。該封隔器抗壓能力強,強度超過混凝土。與膨脹式封隔器相比,MorphPacker的耐用性和可靠性更強,可更有效地實現井眼封堵。
多功能封隔器變形率超過60%,可在地面進行變形與設置。與膨脹式封隔器相比,MorphPacker層位分離封隔器與井眼貼合更為緊密,既節省了時間(膨脹式封隔器安裝需21天),又節約了資源。該封隔器固定于生產套管之上,不受產出液的侵蝕。即使是在惡劣的產氣與注氣環境中,封隔器的接觸應力仍能保持不變。
MorphPacker壓裂封隔器
MorphPacker壓裂封隔器能夠在維持最大內徑的前提下,經濟高效地對射孔進行隔離,為操作人員提供一種快速可靠的增產方法。Meta公司摒棄了可靠性差的降解球以及價格高昂的襯管,在新開發的封隔器中應用了標準襯管,并保證襯管內徑。這種配置方式不僅經濟可靠,而且適用性強。
技術應用
No.1作為未膠結襯管懸掛器
許多操作人員在使用未膠結襯管或者進行完井的時候仍然靠傳統的襯管懸掛器,然后使用生產封隔器進行完井。這不僅增加了設備成本,而且延長了鉆井時間。然而,這些問題在Meta公司的MorphPacker永久式封隔器面前迎刃而解。MorphPacker永久式封隔器的安全性能范圍超過了市面上其他的同類產品。它的強度和懸掛重量適用于任何襯管,不僅簡化了操作流程,而且降低了成本。石油圈原創www.h29736.cn
No.2套管井生產封隔器
高性能的V0型生產封隔器是油氣行業必不可少的一種工具。MorphPacker永久式封隔器可以應用在種類的工作管柱封隔器坐封之上,其安全性能范圍超過了市面上其他的同類產品。由于該產品可適用于多種套管重量,減輕了庫存壓力。石油圈原創www.h29736.cn
No.3用于環空隔離
Meta公司的MorphPacker層位分離封隔器可用于裸眼井和襯管之間進行環空隔離,起到固井的作用。因為即使固井工作不到位的話,僅靠MorphPacker層位分離封隔器也能起到完全隔離的目的。
No.4二次壓裂
MorphPacker壓裂封隔器可用于套管井二次壓裂,并保證內徑損失量最小。操作人員可使用MorphPacker壓裂封隔器對射孔進行隔離,并進行二次壓裂。該產品價格實惠,保持井眼內經效果良好,可與標準調停設備同時使用。
技術性能
- 變形率—高達60%;
- 油井密封壽命—50年以上;
- 瞬時主動密封—15000psi。石油圈原創www.h29736.cn
封隔器作為重要工具,本身價值不高,但在作業過程中的應用性卻有這不可多得的妙處。目前國內的封隔器技術研究存在著諸多問題,包括封隔器適用范圍不夠廣泛、產品過于繁雜以及設計工作不夠精細化等。MorphPackers系列封隔器足以成為國內相關研究和應用的一個技術樣例,取精華去糟粕,在不斷摸索的路上,終取得技術突破。
來自/Meta 譯者/于曉琳 編輯/Leia
Middle Eastern Operators are faced with new challenges in extracting ‘new’ oil and gas from much deeper complexed reservoirs thus requiring a different approach demanding new techniques to address today’s life of well integrity requirements. Meta has directly addressed these local challenges keeping in mind today’s economic restrictions by developing a range of low cost and high performance packers.
The Permanent MorphPacker is a cased hole production packer. It can also be used as a liner top packer with anchoring in uncemented applications, and is suitable for geothermal and HPHT completions. It breaks the rules of conventional packer design. By using Meta’s patented Metalmorphology technology, a V0 packer with only 7 components, no moving parts, and no internal seals has been created. It allows for a fullbore design that matches liner ID, a major advantage to operators.
Not only does the product cost less but it more reliable, faster and easier to install than competitor packers saving operators money in terms of rig time, requires less equipment in the first place as operationally it can carry out the role of multiple products, so also simplifies supply chain.
The Zonal Isolation MorphPacker provides life of well isolation in the open hole, exceeding the capabilities of cement. With a morphing ratio of over 60% and its differential pressure capabilities, this durable and reliable packer sets instantly, compared to swellables, conforming perfectly to the wellbore.
Multiple packers can be morphed and set from surface, saving valuable time and resources. The packers are attached to base casing and are resistant to any degradation from produced fluids. Contact force is also maintained in the most challenging of gas production and injection environments.
The Frac MorphPacker offers a cost effective way to instantly isolate old perforations, while maintaining the maximum ID, giving operators a quick and reliable way to re-stimulate their wells. Instead of using degradable balls which can be unreliable, or using expensive liners, Meta has created a packer that uses standard liners and still maintains standard liner IDs. This reliable and affordable solution is flexible as it’s configurable for both plug and guns and ball drop sleeve systems.
MorphPackers
There are few issues that keep operators and drilling contractors awake at night as much as a well’s zonal and barrier integrity. Washouts that erode the borehole or poor cementing jobs that threaten barrier integrity can have huge implications for well production. Today, the frequency of problem zones in high risk wells, such as HP/HT wells and shale formations, can be as high as 90%。
Meta offers a range of MorphPackers to meet a range of downhole isolation challenges; Zonal Isolation MorphPacker, Permanent MorphPacker and the Frac MorphPacker.
The Zonal Isolation MorphPacker is providing the answers and extending the boundaries for open hole isolation. With a morphing ratio of over 60% and its differential pressure capabilities, this durable and reliable packer sets instantly, compared to swellables which take up to 21 days, conforming perfectly to the open hole. Lasting for the lifetime of the well and exceeding the capabilities of cement it gives operators that much needed peace of mind. Its the Metalmorphology that provides the catalyst for a new way of working. Multiple packers can be morphed and set from surface, saving valuable time and resources. The packers are attached to base casing and are resistant to any degradation from produced fluids. Contact force is also maintained in the most challenging of gas production and injection environments.
The Permanent MorphPacker is a complete rethink of how packers are typically designed. A conventional packer has over 20 components, multiple internal seals, internal threads, multiple moving parts, complex multi-component elements and shear screws, all of which have to work together perfectly to achieve a seal. Meta has developed a production packer with just 7 components, zero moving parts, zero internal seals, zero internal packer threads, zero shear screws and a simple external element with a zero extrusion gap design. Shaping metal downhole, using Metalmorphology, also allows for a fullbore design that matches the liner. The simplistic design means its a reliable and high end product, yet affordable.
The Frac MorphPacker provides a cost effective way to instantly isolate old perforations while maintaining the maximum ID, giving operators a quick and reliable way to re-stimulate their wells. Easy to run, quick to set and maintaining the largest ID possible, the Frac MorphPacker is changing the way operators approach re-stimulation. Instead of using degradable balls and hoping they will last, or running expensive expandable liners, operators running the Frac MorphPacker can permanently isolate existing zones using standard liners and still maintain standard liner IDs. Configurable for both plug and guns and ball drop sleeve systems, this is a re-stimulation solution that is flexible, reliable and affordable。
Application
- Uncemented Liner Hanger: Many operators use conventional liner hangers even when running uncemented liners or completions, and then run a production packer as part of their completion. This doubling up on tools increases equipment costsas well as the rig time, however with Meta’s Permanent MorphPacker this is no longer required. The Permanent MorphPacker has a performance envelope that exceeds other packers on the market. It has the robustness and hang weight capability of any liner, therefore it can perform the role of both tools, simplifying operations and reducing costs
- Annular Isolation:The Meta Zonal Isolation MorphPacker? can be used to provide annular isolation between the open hole and the liner as an alternative to cement. Also, when run at the same time as cement, the packer can be used as a contingency, so if the cement job is of poor quality, full isolation will still be achieved thanks to the Zonal Isolation MorphPacker
- Cased Hole Production Packer:Operators worldwide, in both oil and gas, may have requirements for high performing V0 production packers. Deployed as any other work string set packer, the Permanent MorphPacker gives operators a single packer with an envelope that outperforms any on the market and can be used in a wide range of casing weights, simplifying inventory.
- Re-fracturing:The Frac MorphPacker can be used in cased hole re-fracturing applications with minimal loss of ID. Operators can isolate the existing perforations and then re-frac the well using standard plug and guns or ball drop sleeves. The Frac MorphPacker is significantly more affordable than competitive mechanical isolation methods and yet still provides large ID, allowing standard intervention equipment to be used.
- solate Perforations:Operators can use the Frac MorphPacker to isolate existing perforations or damaged casing. Two Frac MorphPackers can be run to straddle the section with standard flush joint pipe between, giving operators an isolation method that is both reliable and affordable, and still provides a large ID for future intervention.
Performance
- Morphing ratio: up to 60%;
- Life of well seal : 50+years;
- Instant active seal: 15000psi.
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